28973568 has 80 divisors (see below), whose sum is σ = 83182176. Its totient is φ = 8908800.

The previous prime is 28973551. The next prime is 28973579. The reversal of 28973568 is 86537982.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 19243 + ... + 20693.

Almost surely, 2^28973568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28973568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41591088).

28973568 is an abundant number, since it is smaller than the sum of its proper divisors (54208608).

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

28973568 is a wasteful number, since it uses less digits than its factorization.

28973568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1469 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 28973568 is about 5382.7100980826. The cubic root of 28973568 is about 307.1383122663.

The spelling of 28973568 in words is "twenty-eight million, nine hundred seventy-three thousand, five hundred sixty-eight".