28863372 has 24 divisors (see below), whose sum is σ = 67513600. Its totient is φ = 9597456.

The previous prime is 28863371. The next prime is 28863379. The reversal of 28863372 is 27336882.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28863372.

It is not an unprimeable number, because it can be changed into a prime (28863371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529 + ... + 8007.

Almost surely, 2^28863372 is an apocalyptic number.

It is an amenable number.

28863372 is an abundant number, since it is smaller than the sum of its proper divisors (38650228).

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

28863372 is a wasteful number, since it uses less digits than its factorization.

28863372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925 (or 5923 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28863372 is about 5372.4642390620. The cubic root of 28863372 is about 306.7484349275.

The spelling of 28863372 in words is "twenty-eight million, eight hundred sixty-three thousand, three hundred seventy-two".