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13015508180 = 2252328294583
BaseRepresentation
bin11000001111100100…
…01110010011010100
31020121001222022200112
430013302032103110
5203123432230210
65551303302152
7640351664663
oct140762162324
936531868615
1013015508180
115579a07a34
122632a4a958
1312c567173c
148b6844dda
155129b6d05
hex307c8e4d4

13015508180 has 24 divisors (see below), whose sum is σ = 28520940672. Its totient is φ = 4979846432.

The previous prime is 13015508173. The next prime is 13015508189. The reversal of 13015508180 is 8180551031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13015508189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14146832 + ... + 14147751.

It is an arithmetic number, because the mean of its divisors is an integer number (1188372528).

Almost surely, 213015508180 is an apocalyptic number.

13015508180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13015508180 is an abundant number, since it is smaller than the sum of its proper divisors (15505432492).

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

13015508180 is a wasteful number, since it uses less digits than its factorization.

13015508180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28294615 (or 28294613 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 32.

The spelling of 13015508180 in words is "thirteen billion, fifteen million, five hundred eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 28294583 56589166 113178332 141472915 282945830 565891660 650775409 1301550818 2603101636 3253877045 6507754090 13015508180