28865934 has 12 divisors (see below), whose sum is σ = 62542896. Its totient is φ = 9621972.

The previous prime is 28865911. The next prime is 28865987. The reversal of 28865934 is 43956882.

It is a self number, because there is not a number n which added to its sum of digits gives 28865934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801814 + ... + 801849.

It is an arithmetic number, because the mean of its divisors is an integer number (5211908).

Almost surely, 2^28865934 is an apocalyptic number.

28865934 is an abundant number, since it is smaller than the sum of its proper divisors (33676962).

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

28865934 is a wasteful number, since it uses less digits than its factorization.

28865934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603671 (or 1603668 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28865934 is about 5372.7026718403. The cubic root of 28865934 is about 306.7575106312.

The spelling of 28865934 in words is "twenty-eight million, eight hundred sixty-five thousand, nine hundred thirty-four".