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130015860 = 2235131931283
BaseRepresentation
bin1111011111111…
…10001001110100
3100001122111020020
413233332021310
5231241001420
620522405140
73136054662
oct757761164
9301574206
10130015860
1167432927
12376607b0
1320c22a80
14133a5c32
15b633340
hex7bfe274

130015860 has 192 divisors, whose sum is σ = 427499520. Its totient is φ = 29237760.

The previous prime is 130015811. The next prime is 130015889. The reversal of 130015860 is 68510031.

It is a self number, because there is not a number n which added to its sum of digits gives 130015860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 459279 + ... + 459561.

It is an arithmetic number, because the mean of its divisors is an integer number (2226560).

Almost surely, 2130015860 is an apocalyptic number.

130015860 is a gapful number since it is divisible by the number (10) 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 130015860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213749760).

130015860 is an abundant number, since it is smaller than the sum of its proper divisors (297483660).

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

130015860 is a wasteful number, since it uses less digits than its factorization.

130015860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 130015860 is about 11402.4497367890. The cubic root of 130015860 is about 506.6003019803.

Adding to 130015860 its reverse (68510031), we get a palindrome (198525891).

The spelling of 130015860 in words is "one hundred thirty million, fifteen thousand, eight hundred sixty".