28822764 has 12 divisors (see below), whose sum is σ = 67253144. Its totient is φ = 9607584.

The previous prime is 28822763. The next prime is 28822789. The reversal of 28822764 is 46722882.

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

It is not an unprimeable number, because it can be changed into a prime (28822763) 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, 1200937 + ... + 1200960.

Almost surely, 2^28822764 is an apocalyptic number.

It is an amenable number.

28822764 is an abundant number, since it is smaller than the sum of its proper divisors (38430380).

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

28822764 is a wasteful number, since it uses less digits than its factorization.

28822764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401904 (or 2401902 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 28822764 is about 5368.6836375410. The cubic root of 28822764 is about 306.6045121882.

The spelling of 28822764 in words is "twenty-eight million, eight hundred twenty-two thousand, seven hundred sixty-four".