28745956 has 6 divisors (see below), whose sum is σ = 50305430. Its totient is φ = 14372976.

The previous prime is 28745953. The next prime is 28745987. The reversal of 28745956 is 65954782.

It can be written as a sum of positive squares in only one way, i.e., 28302400 + 443556 = 5320^2 + 666^2 .

It is not an unprimeable number, because it can be changed into a prime (28745953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3593241 + ... + 3593248.

Almost surely, 2^28745956 is an apocalyptic number.

It is an amenable number.

28745956 is a deficient number, since it is larger than the sum of its proper divisors (21559474).

28745956 is a wasteful number, since it uses less digits than its factorization.

28745956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7186493 (or 7186491 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 28745956 is about 5361.5255291754. The cubic root of 28745956 is about 306.3319194430.

The spelling of 28745956 in words is "twenty-eight million, seven hundred forty-five thousand, nine hundred fifty-six".