28660744 has 32 divisors (see below), whose sum is σ = 61591680. Its totient is φ = 12248064.

The previous prime is 28660739. The next prime is 28660781. The reversal of 28660744 is 44706682.

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, 31869 + ... + 32755.

It is an arithmetic number, because the mean of its divisors is an integer number (1924740).

Almost surely, 2^28660744 is an apocalyptic number.

It is an amenable number.

28660744 is an abundant number, since it is smaller than the sum of its proper divisors (32930936).

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

28660744 is a wasteful number, since it uses less digits than its factorization.

28660744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 28660744 is about 5353.5730124843. The cubic root of 28660744 is about 306.0289320046.

The spelling of 28660744 in words is "twenty-eight million, six hundred sixty thousand, seven hundred forty-four".