20624982 has 72 divisors (see below), whose sum is σ = 50261688. Its totient is φ = 5624640.

The previous prime is 20624977. The next prime is 20624987. The reversal of 20624982 is 28942602.

It is an interprime number because it is at equal distance from previous prime (20624977) and next prime (20624987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624987) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 282498 + ... + 282570.

It is an arithmetic number, because the mean of its divisors is an integer number (698079).

Almost surely, 2^20624982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20624982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25130844).

20624982 is an abundant number, since it is smaller than the sum of its proper divisors (29636706).

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

20624982 is a wasteful number, since it uses less digits than its factorization.

20624982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20624982 is about 4541.4735494110. The cubic root of 20624982 is about 274.2402478426.

The spelling of 20624982 in words is "twenty million, six hundred twenty-four thousand, nine hundred eighty-two".