20932704 has 72 divisors (see below), whose sum is σ = 64117872. Its totient is φ = 6439680.

The previous prime is 20932679. The next prime is 20932753. The reversal of 20932704 is 40723902.

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 11 ways as a sum of consecutive naturals, for example, 949 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (890526).

Almost surely, 2^20932704 is an apocalyptic number.

20932704 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 20932704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32058936).

20932704 is an abundant number, since it is smaller than the sum of its proper divisors (43185168).

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

20932704 is a wasteful number, since it uses less digits than its factorization.

20932704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620 (or 5609 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20932704 is about 4575.2272074729. The cubic root of 20932704 is about 275.5973966217.

The spelling of 20932704 in words is "twenty million, nine hundred thirty-two thousand, seven hundred four".