15012232040 has 32 divisors (see below), whose sum is σ = 36375794280. Its totient is φ = 5542977792.

The previous prime is 15012232003. The next prime is 15012232057. The reversal of 15012232040 is 4023221051.

It can be written as a sum of positive squares in 4 ways, for example, as 12992808196 + 2019423844 = 113986^2 + 44938^2 .

It is a super-2 number, since 2×15012232040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 14434319 + ... + 14435358.

Almost surely, 2^15012232040 is an apocalyptic number.

15012232040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15012232040 is an abundant number, since it is smaller than the sum of its proper divisors (21363562240).

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

15012232040 is a wasteful number, since it uses less digits than its factorization.

15012232040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28869701 (or 28869697 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 15012232040 its reverse (4023221051), we get a palindrome (19035453091).

The spelling of 15012232040 in words is "fifteen billion, twelve million, two hundred thirty-two thousand, forty".