28872436 has 12 divisors (see below), whose sum is σ = 51702112. Its totient is φ = 14100408.

The previous prime is 28872433. The next prime is 28872451. The reversal of 28872436 is 63427882.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28872433) 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, 83760 + ... + 84103.

Almost surely, 2^28872436 is an apocalyptic number.

It is an amenable number.

28872436 is a deficient number, since it is larger than the sum of its proper divisors (22829676).

28872436 is a wasteful number, since it uses less digits than its factorization.

28872436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167910 (or 167908 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 28872436 is about 5373.3077336032. The cubic root of 28872436 is about 306.7805410957.

The spelling of 28872436 in words is "twenty-eight million, eight hundred seventy-two thousand, four hundred thirty-six".