12920024 has 16 divisors (see below), whose sum is σ = 26088720. Its totient is φ = 5963040.

The previous prime is 12920023. The next prime is 12920071. The reversal of 12920024 is 42002921.

It is a junction number, because it is equal to n+sod(n) for n = 12919978 and 12920005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12920023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62012 + ... + 62219.

It is an arithmetic number, because the mean of its divisors is an integer number (1630545).

Almost surely, 2^12920024 is an apocalyptic number.

It is an amenable number.

12920024 is an abundant number, since it is smaller than the sum of its proper divisors (13168696).

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

12920024 is a wasteful number, since it uses less digits than its factorization.

12920024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124250 (or 124246 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12920024 is about 3594.4434896100. The cubic root of 12920024 is about 234.6502962209.

Adding to 12920024 its reverse (42002921), we get a palindrome (54922945).

The spelling of 12920024 in words is "twelve million, nine hundred twenty thousand, twenty-four".