28937436 has 24 divisors (see below), whose sum is σ = 73659264. Its totient is φ = 8768880.

The previous prime is 28937423. The next prime is 28937443. The reversal of 28937436 is 63473982.

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, 109480 + ... + 109743.

It is an arithmetic number, because the mean of its divisors is an integer number (3069136).

Almost surely, 2^28937436 is an apocalyptic number.

It is an amenable number.

28937436 is an abundant number, since it is smaller than the sum of its proper divisors (44721828).

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

28937436 is a wasteful number, since it uses less digits than its factorization.

28937436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219241 (or 219239 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 28937436 is about 5379.3527491697. The cubic root of 28937436 is about 307.0105850701.

The spelling of 28937436 in words is "twenty-eight million, nine hundred thirty-seven thousand, four hundred thirty-six".