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5131008 = 283217131
BaseRepresentation
bin10011100100101100000000
3100122200102100
4103210230000
52303143013
6301550400
761420131
oct23445400
910580370
105131008
112995003
121875400
1310a85cc
14977c88
156b5473
hex4e4b00

5131008 has 108 divisors (see below), whose sum is σ = 15783768. Its totient is φ = 1597440.

The previous prime is 5130997. The next prime is 5131013. The reversal of 5131008 is 8001315.

It is a happy number.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39103 + ... + 39233.

It is an arithmetic number, because the mean of its divisors is an integer number (146146).

Almost surely, 25131008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5131008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7891884).

5131008 is an abundant number, since it is smaller than the sum of its proper divisors (10652760).

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

5131008 is a wasteful number, since it uses less digits than its factorization.

5131008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 5131008 is about 2265.1728410874. The cubic root of 5131008 is about 172.4782077070.

It can be divided in two parts, 513 and 1008, that added together give a square (1521 = 392).

The spelling of 5131008 in words is "five million, one hundred thirty-one thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 16 17 18 24 32 34 36 48 51 64 68 72 96 102 128 131 136 144 153 192 204 256 262 272 288 306 384 393 408 524 544 576 612 768 786 816 1048 1088 1152 1179 1224 1572 1632 2096 2176 2227 2304 2358 2448 3144 3264 4192 4352 4454 4716 4896 6288 6528 6681 8384 8908 9432 9792 12576 13056 13362 16768 17816 18864 19584 20043 25152 26724 33536 35632 37728 39168 40086 50304 53448 71264 75456 80172 100608 106896 142528 150912 160344 213792 285056 301824 320688 427584 570112 641376 855168 1282752 1710336 2565504 5131008