20748600 has 72 divisors (see below), whose sum is σ = 69686760. Its totient is φ = 5532480.

The previous prime is 20748593. The next prime is 20748617. The reversal of 20748600 is 684702.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3964 + ... + 7563.

Almost surely, 2^20748600 is an apocalyptic number.

20748600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20748600 is an abundant number, since it is smaller than the sum of its proper divisors (48938160).

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

20748600 is a wasteful number, since it uses less digits than its factorization.

20748600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11549 (or 11537 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20748600 is about 4555.0631170161. The cubic root of 20748600 is about 274.7870527770.

The spelling of 20748600 in words is "twenty million, seven hundred forty-eight thousand, six hundred".