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13012301220 = 22351493145259
BaseRepresentation
bin11000001111001011…
…11111010110100100
31020120211221101120020
430013211333112210
5203122122114340
65551110435140
7640312510152
oct140745772644
936524841506
1013012301220
115578117556
122631962ab0
1312c4abab29
148b624c3d2
155125819d0
hex30797f5a4

13012301220 has 48 divisors (see below), whose sum is σ = 36459097920. Its totient is φ = 3467598976.

The previous prime is 13012301213. The next prime is 13012301233. The reversal of 13012301220 is 2210321031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13012301220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16951 + ... + 162209.

It is an arithmetic number, because the mean of its divisors is an integer number (759564540).

Almost surely, 213012301220 is an apocalyptic number.

13012301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012301220 is an abundant number, since it is smaller than the sum of its proper divisors (23446796700).

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

13012301220 is a wasteful number, since it uses less digits than its factorization.

13012301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146764 (or 146762 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13012301220 its reverse (2210321031), we get a palindrome (15222622251).

The spelling of 13012301220 in words is "thirteen billion, twelve million, three hundred one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1493 2986 4479 5972 7465 8958 14930 17916 22395 29860 44790 89580 145259 290518 435777 581036 726295 871554 1452590 1743108 2178885 2905180 4357770 8715540 216871687 433743374 650615061 867486748 1084358435 1301230122 2168716870 2602460244 3253075305 4337433740 6506150610 13012301220