28277452 has 12 divisors (see below), whose sum is σ = 56554960. Its totient is φ = 12118896.

The previous prime is 28277437. The next prime is 28277467. The reversal of 28277452 is 25477282.

It is an interprime number because it is at equal distance from previous prime (28277437) and next prime (28277467).

28277452 is an admirable number.

It is a super-2 number, since 2×28277452² = 1599228583224608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504927 + ... + 504982.

Almost surely, 2^28277452 is an apocalyptic number.

It is an amenable number.

28277452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28277452 is a wasteful number, since it uses less digits than its factorization.

28277452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009920 (or 1009918 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 28277452 is about 5317.6547462204. The cubic root of 28277452 is about 304.6585877821.

The spelling of 28277452 in words is "twenty-eight million, two hundred seventy-seven thousand, four hundred fifty-two".