20624405982 has 16 divisors (see below), whose sum is σ = 41318378640. Its totient is φ = 6863207552.

The previous prime is 20624405981. The next prime is 20624405987. The reversal of 20624405982 is 28950442602.

It is a super-2 number, since 2×20624405982² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624405981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2894757 + ... + 2901872.

It is an arithmetic number, because the mean of its divisors is an integer number (2582398665).

Almost surely, 2^20624405982 is an apocalyptic number.

20624405982 is an abundant number, since it is smaller than the sum of its proper divisors (20693972658).

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

20624405982 is a wasteful number, since it uses less digits than its factorization.

20624405982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797227.

The product of its (nonzero) digits is 276480, while the sum is 42.

It can be divided in two parts, 2062 and 4405982, that added together give a palindrome (4408044).

The spelling of 20624405982 in words is "twenty billion, six hundred twenty-four million, four hundred five thousand, nine hundred eighty-two".