28276356 has 12 divisors (see below), whose sum is σ = 65978192. Its totient is φ = 9425448.

The previous prime is 28276349. The next prime is 28276387. The reversal of 28276356 is 65367282.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1178170 + ... + 1178193.

Almost surely, 2^28276356 is an apocalyptic number.

It is an amenable number.

28276356 is an abundant number, since it is smaller than the sum of its proper divisors (37701836).

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

28276356 is a wasteful number, since it uses less digits than its factorization.

28276356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356370 (or 2356368 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 28276356 is about 5317.5516922734. The cubic root of 28276356 is about 304.6546516645.

The spelling of 28276356 in words is "twenty-eight million, two hundred seventy-six thousand, three hundred fifty-six".