28965456 has 60 divisors (see below), whose sum is σ = 87304308. Its totient is φ = 8911872.

The previous prime is 28965449. The next prime is 28965457. The reversal of 28965456 is 65456982.

It can be written as a sum of positive squares in 2 ways, for example, as 7952400 + 21013056 = 2820^2 + 4584^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5865 + ... + 9608.

Almost surely, 2^28965456 is an apocalyptic number.

28965456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28965456 is an abundant number, since it is smaller than the sum of its proper divisors (58338852).

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

28965456 is a wasteful number, since it uses less digits than its factorization.

28965456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15500 (or 15491 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 28965456 is about 5381.9565215635. The cubic root of 28965456 is about 307.1096454650.

The spelling of 28965456 in words is "twenty-eight million, nine hundred sixty-five thousand, four hundred fifty-six".