28764532 has 24 divisors (see below), whose sum is σ = 51327360. Its totient is φ = 14102400.

The previous prime is 28764529. The next prime is 28764551. The reversal of 28764532 is 23546782.

It is a junction number, because it is equal to n+sod(n) for n = 28764491 and 28764500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71532 + ... + 71932.

It is an arithmetic number, because the mean of its divisors is an integer number (2138640).

Almost surely, 2^28764532 is an apocalyptic number.

It is an amenable number.

28764532 is a deficient number, since it is larger than the sum of its proper divisors (22562828).

28764532 is a wasteful number, since it uses less digits than its factorization.

28764532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 709 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 28764532 is about 5363.2575921729. The cubic root of 28764532 is about 306.3978904203.

The spelling of 28764532 in words is "twenty-eight million, seven hundred sixty-four thousand, five hundred thirty-two".