28955764 has 6 divisors (see below), whose sum is σ = 50672594. Its totient is φ = 14477880.

The previous prime is 28955737. The next prime is 28955819. The reversal of 28955764 is 46755982.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 7333264 = 4650^2 + 2708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3619467 + ... + 3619474.

Almost surely, 2^28955764 is an apocalyptic number.

It is an amenable number.

28955764 is a deficient number, since it is larger than the sum of its proper divisors (21716830).

28955764 is a wasteful number, since it uses less digits than its factorization.

28955764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238945 (or 7238943 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 28955764 is about 5381.0560301859. The cubic root of 28955764 is about 307.0753881215.

The spelling of 28955764 in words is "twenty-eight million, nine hundred fifty-five thousand, seven hundred sixty-four".