28799764 has 24 divisors (see below), whose sum is σ = 59158400. Its totient is φ = 12008736.

The previous prime is 28799761. The next prime is 28799779. The reversal of 28799764 is 46799782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28799761) 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, 12864 + ... + 14935.

Almost surely, 2^28799764 is an apocalyptic number.

It is an amenable number.

28799764 is an abundant number, since it is smaller than the sum of its proper divisors (30358636).

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

28799764 is a wasteful number, since it uses less digits than its factorization.

28799764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27847 (or 27845 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The square root of 28799764 is about 5366.5411579527. The cubic root of 28799764 is about 306.5229356911.

The spelling of 28799764 in words is "twenty-eight million, seven hundred ninety-nine thousand, seven hundred sixty-four".