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15230145012 = 2238231542137
BaseRepresentation
bin11100010111100100…
…11001000111110100
31110022102012112021220
432023302121013310
5222142404120022
610555134510340
71046263045065
oct161362310764
943272175256
1015230145012
116506024405
122b506653b0
131589429334
14a46a1256c
155e212585c
hex38bc991f4

15230145012 has 24 divisors (see below), whose sum is σ = 35580207936. Its totient is φ = 5070543168.

The previous prime is 15230144971. The next prime is 15230145041. The reversal of 15230145012 is 21054103251.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761193 + ... + 780944.

It is an arithmetic number, because the mean of its divisors is an integer number (1482508664).

Almost surely, 215230145012 is an apocalyptic number.

15230145012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15230145012 is an abundant number, since it is smaller than the sum of its proper divisors (20350062924).

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

15230145012 is a wasteful number, since it uses less digits than its factorization.

15230145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542967 (or 1542965 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 15230145012 its reverse (21054103251), we get a palindrome (36284248263).

The spelling of 15230145012 in words is "fifteen billion, two hundred thirty million, one hundred forty-five thousand, twelve".

Divisors: 1 2 3 4 6 12 823 1646 2469 3292 4938 9876 1542137 3084274 4626411 6168548 9252822 18505644 1269178751 2538357502 3807536253 5076715004 7615072506 15230145012