12920384 has 14 divisors (see below), whose sum is σ = 25639014. Its totient is φ = 6460160.

The previous prime is 12920381. The next prime is 12920389. The reversal of 12920384 is 48302921.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 529984 = 3520^2 + 728^2 .

It is not an unprimeable number, because it can be changed into a prime (12920381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100877 + ... + 101004.

Almost surely, 2^12920384 is an apocalyptic number.

It is an amenable number.

12920384 is a deficient number, since it is larger than the sum of its proper divisors (12718630).

12920384 is an equidigital number, since it uses as much as digits as its factorization.

12920384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201893 (or 201883 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12920384 is about 3594.4935665543. The cubic root of 12920384 is about 234.6524756111.

The spelling of 12920384 in words is "twelve million, nine hundred twenty thousand, three hundred eighty-four".