28207936 has 28 divisors (see below), whose sum is σ = 58411872. Its totient is φ = 13490048.

The previous prime is 28207931. The next prime is 28207937. The reversal of 28207936 is 63970282.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28207895 and 28207904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28207931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8110 + ... + 11053.

Almost surely, 2^28207936 is an apocalyptic number.

It is an amenable number.

28207936 is an abundant number, since it is smaller than the sum of its proper divisors (30203936).

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

28207936 is a wasteful number, since it uses less digits than its factorization.

28207936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19198 (or 19188 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 28207936 is about 5311.1143840064. The cubic root of 28207936 is about 304.4087299920.

The spelling of 28207936 in words is "twenty-eight million, two hundred seven thousand, nine hundred thirty-six".