28783164 has 12 divisors (see below), whose sum is σ = 67160744. Its totient is φ = 9594384.

The previous prime is 28783141. The next prime is 28783199. The reversal of 28783164 is 46138782.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199287 + ... + 1199310.

Almost surely, 2^28783164 is an apocalyptic number.

It is an amenable number.

28783164 is an abundant number, since it is smaller than the sum of its proper divisors (38377580).

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

28783164 is a wasteful number, since it uses less digits than its factorization.

28783164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398604 (or 2398602 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 28783164 is about 5364.9943150016. The cubic root of 28783164 is about 306.4640317517.

The spelling of 28783164 in words is "twenty-eight million, seven hundred eighty-three thousand, one hundred sixty-four".