28600920 has 96 divisors (see below), whose sum is σ = 94770000. Its totient is φ = 7478016.

The previous prime is 28600883. The next prime is 28600967. The reversal of 28600920 is 2900682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18331 + ... + 19829.

Almost surely, 2^28600920 is an apocalyptic number.

28600920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28600920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47385000).

28600920 is an abundant number, since it is smaller than the sum of its proper divisors (66169080).

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

28600920 is a wasteful number, since it uses less digits than its factorization.

28600920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28600920 is about 5347.9827972797. The cubic root of 28600920 is about 305.8158574275.

The spelling of 28600920 in words is "twenty-eight million, six hundred thousand, nine hundred twenty".