15212430020 has 48 divisors (see below), whose sum is σ = 32552150400. Its totient is φ = 5970581760.

The previous prime is 15212430011. The next prime is 15212430053. The reversal of 15212430020 is 2003421251.

It is a super-2 number, since 2×15212430020² (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 a junction number, because it is equal to n+sod(n) for n = 15212429974 and 15212430001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200561 + ... + 265799.

It is an arithmetic number, because the mean of its divisors is an integer number (678169800).

Almost surely, 2^15212430020 is an apocalyptic number.

15212430020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15212430020 is an abundant number, since it is smaller than the sum of its proper divisors (17339720380).

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

15212430020 is a wasteful number, since it uses less digits than its factorization.

15212430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65468 (or 65466 counting only the distinct ones).

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

Adding to 15212430020 its reverse (2003421251), we get a palindrome (17215851271).

The spelling of 15212430020 in words is "fifteen billion, two hundred twelve million, four hundred thirty thousand, twenty".