28945256 has 8 divisors (see below), whose sum is σ = 54272370. Its totient is φ = 14472624.

The previous prime is 28945253. The next prime is 28945283. The reversal of 28945256 is 65254982.

It can be written as a sum of positive squares in only one way, i.e., 15476356 + 13468900 = 3934^2 + 3670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28945253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1809071 + ... + 1809086.

Almost surely, 2^28945256 is an apocalyptic number.

It is an amenable number.

28945256 is a deficient number, since it is larger than the sum of its proper divisors (25327114).

28945256 is a wasteful number, since it uses less digits than its factorization.

28945256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618163 (or 3618159 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 28945256 is about 5380.0795533152. The cubic root of 28945256 is about 307.0382379064.

The spelling of 28945256 in words is "twenty-eight million, nine hundred forty-five thousand, two hundred fifty-six".