28360788 has 12 divisors (see below), whose sum is σ = 66175200. Its totient is φ = 9453592.

The previous prime is 28360757. The next prime is 28360789. The reversal of 28360788 is 88706382.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28360789) 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, 1181688 + ... + 1181711.

It is an arithmetic number, because the mean of its divisors is an integer number (5514600).

Almost surely, 2^28360788 is an apocalyptic number.

It is an amenable number.

28360788 is an abundant number, since it is smaller than the sum of its proper divisors (37814412).

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

28360788 is a wasteful number, since it uses less digits than its factorization.

28360788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363406 (or 2363404 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 28360788 is about 5325.4847666668. The cubic root of 28360788 is about 304.9575789787.

The spelling of 28360788 in words is "twenty-eight million, three hundred sixty thousand, seven hundred eighty-eight".