28351236 has 24 divisors (see below), whose sum is σ = 68287744. Its totient is φ = 9145440.

The previous prime is 28351201. The next prime is 28351247. The reversal of 28351236 is 63215382.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 37735 + ... + 38478.

Almost surely, 2^28351236 is an apocalyptic number.

It is an amenable number.

28351236 is an abundant number, since it is smaller than the sum of its proper divisors (39936508).

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

28351236 is a wasteful number, since it uses less digits than its factorization.

28351236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76251 (or 76249 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 28351236 is about 5324.5878713756. The cubic root of 28351236 is about 304.9233382531.

The spelling of 28351236 in words is "twenty-eight million, three hundred fifty-one thousand, two hundred thirty-six".