28277364 has 24 divisors (see below), whose sum is σ = 66201408. Its totient is φ = 9394240.

The previous prime is 28277357. The next prime is 28277371. The reversal of 28277364 is 46377282.

It is an interprime number because it is at equal distance from previous prime (28277357) and next prime (28277371).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 7520.

It is an arithmetic number, because the mean of its divisors is an integer number (2758392).

Almost surely, 2^28277364 is an apocalyptic number.

It is an amenable number.

28277364 is an abundant number, since it is smaller than the sum of its proper divisors (37924044).

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

28277364 is a wasteful number, since it uses less digits than its factorization.

28277364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7895 (or 7893 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 28277364 is about 5317.6464718896. The cubic root of 28277364 is about 304.6582717472.

The spelling of 28277364 in words is "twenty-eight million, two hundred seventy-seven thousand, three hundred sixty-four".