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890010012160 = 2951709203429
BaseRepresentation
bin11001111001110001011…
…10110000101000000000
310011002021022212010012201
430330320232300220000
5104040220030342120
61520510455202544
7121205164165363
oct14747056605000
93132238763181
10890010012160
113134a64a40a5
121245a6676454
1365c09b95bb9
143111070c0da
151824049a40a
hexcf38bb0a00

890010012160 has 80 divisors (see below), whose sum is σ = 2135197211400. Its totient is φ = 355793944576.

The previous prime is 890010012149. The next prime is 890010012163. The reversal of 890010012160 is 61210010098.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 281884541184 + 608125470976 = 530928^2 + 779824^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (890010012163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4273326 + ... + 4476754.

Almost surely, 2890010012160 is an apocalyptic number.

890010012160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 890010012160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067598605700).

890010012160 is an abundant number, since it is smaller than the sum of its proper divisors (1245187199240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

890010012160 is a wasteful number, since it uses less digits than its factorization.

890010012160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205161 (or 205145 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 890010012160 in words is "eight hundred ninety billion, ten million, twelve thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1280 1709 2560 3418 6836 8545 13672 17090 27344 34180 54688 68360 109376 136720 203429 218752 273440 406858 437504 546880 813716 875008 1017145 1093760 1627432 2034290 2187520 3254864 4068580 4375040 6509728 8137160 13019456 16274320 26038912 32548640 52077824 65097280 104155648 130194560 260389120 347660161 520778240 695320322 1390640644 1738300805 2781281288 3476601610 5562562576 6953203220 11125125152 13906406440 22250250304 27812812880 44500500608 55625625760 89001001216 111251251520 178002002432 222502503040 445005006080 890010012160