28748764 has 24 divisors (see below), whose sum is σ = 55109376. Its totient is φ = 13014000.

The previous prime is 28748761. The next prime is 28748771. The reversal of 28748764 is 46784782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28748761) 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, 10719 + ... + 13129.

It is an arithmetic number, because the mean of its divisors is an integer number (2296224).

Almost surely, 2^28748764 is an apocalyptic number.

It is an amenable number.

28748764 is a deficient number, since it is larger than the sum of its proper divisors (26360612).

28748764 is a wasteful number, since it uses less digits than its factorization.

28748764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697 (or 2695 counting only the distinct ones).

The product of its digits is 602112, while the sum is 46.

The square root of 28748764 is about 5361.7873885487. The cubic root of 28748764 is about 306.3418936231.

The spelling of 28748764 in words is "twenty-eight million, seven hundred forty-eight thousand, seven hundred sixty-four".