12928465 has 16 divisors (see below), whose sum is σ = 17001216. Its totient is φ = 9360000.

The previous prime is 12928459. The next prime is 12928477. The reversal of 12928465 is 56482921.

12928465 = 9² + 10² + ... + 338².

It is not a de Polignac number, because 12928465 - 2⁹ = 12927953 is a prime.

It is a Duffinian number.

Its product of digits (34560) is a multiple of the sum of its prime divisors (1080).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16840 + ... + 17590.

It is an arithmetic number, because the mean of its divisors is an integer number (1062576).

Almost surely, 2^12928465 is an apocalyptic number.

It is an amenable number.

12928465 is a deficient number, since it is larger than the sum of its proper divisors (4072751).

12928465 is a wasteful number, since it uses less digits than its factorization.

12928465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 34560, while the sum is 37.

The square root of 12928465 is about 3595.6174713114. The cubic root of 12928465 is about 234.7013862179.

The spelling of 12928465 in words is "twelve million, nine hundred twenty-eight thousand, four hundred sixty-five".