28917084 has 24 divisors (see below), whose sum is σ = 77112448. Its totient is φ = 8262000.

The previous prime is 28917073. The next prime is 28917101. The reversal of 28917084 is 48071982.

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, 172042 + ... + 172209.

Almost surely, 2^28917084 is an apocalyptic number.

It is an amenable number.

28917084 is an abundant number, since it is smaller than the sum of its proper divisors (48195364).

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

28917084 is a wasteful number, since it uses less digits than its factorization.

28917084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344265 (or 344263 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 28917084 is about 5377.4607390478. The cubic root of 28917084 is about 306.9385936097.

The spelling of 28917084 in words is "twenty-eight million, nine hundred seventeen thousand, eighty-four".