28363872 has 48 divisors (see below), whose sum is σ = 74753280. Its totient is φ = 9416832.

The previous prime is 28363849. The next prime is 28363873. The reversal of 28363872 is 27836382.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28363872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28363873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34053 + ... + 34875.

It is an arithmetic number, because the mean of its divisors is an integer number (1557360).

Almost surely, 2^28363872 is an apocalyptic number.

It is an amenable number.

28363872 is an abundant number, since it is smaller than the sum of its proper divisors (46389408).

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

28363872 is a wasteful number, since it uses less digits than its factorization.

28363872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1187 counting only the distinct ones).

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

The square root of 28363872 is about 5325.7743099009. The cubic root of 28363872 is about 304.9686324455.

The spelling of 28363872 in words is "twenty-eight million, three hundred sixty-three thousand, eight hundred seventy-two".