20704752 has 60 divisors (see below), whose sum is σ = 58950840. Its totient is φ = 6781824.

The previous prime is 20704729. The next prime is 20704763. The reversal of 20704752 is 25740702.

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, 7278 + ... + 9714.

It is an arithmetic number, because the mean of its divisors is an integer number (982514).

Almost surely, 2^20704752 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 20704752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29475420).

20704752 is an abundant number, since it is smaller than the sum of its proper divisors (38246088).

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

20704752 is a wasteful number, since it uses less digits than its factorization.

20704752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2501 counting only the distinct ones).

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

The square root of 20704752 is about 4550.2474657979. The cubic root of 20704752 is about 274.5933471730.

The spelling of 20704752 in words is "twenty million, seven hundred four thousand, seven hundred fifty-two".