20752704 has 84 divisors (see below), whose sum is σ = 67994784. Its totient is φ = 5928192.

The previous prime is 20752691. The next prime is 20752727. The reversal of 20752704 is 40725702.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1459 + ... + 6605.

Almost surely, 2^20752704 is an apocalyptic number.

20752704 is a gapful number since it is divisible by the number (24) 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 20752704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33997392).

20752704 is an abundant number, since it is smaller than the sum of its proper divisors (47242080).

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

20752704 is a wasteful number, since it uses less digits than its factorization.

20752704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172 (or 5159 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20752704 is about 4555.5135824625. The cubic root of 20752704 is about 274.8051688863.

The spelling of 20752704 in words is "twenty million, seven hundred fifty-two thousand, seven hundred four".