20708832 has 96 divisors (see below), whose sum is σ = 57915648. Its totient is φ = 6465536.

The previous prime is 20708819. The next prime is 20708833. The reversal of 20708832 is 23880702.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 20708832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183208 + ... + 183320.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 2^20708832 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 20708832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28957824).

20708832 is an abundant number, since it is smaller than the sum of its proper divisors (37206816).

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

20708832 is a wasteful number, since it uses less digits than its factorization.

20708832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20708832 is about 4550.6957709783. The cubic root of 20708832 is about 274.6113827633.

The spelling of 20708832 in words is "twenty million, seven hundred eight thousand, eight hundred thirty-two".