20624431080 has 64 divisors (see below), whose sum is σ = 67498142400. Its totient is φ = 4999861760.

The previous prime is 20624431031. The next prime is 20624431081. The reversal of 20624431080 is 8013442602.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20624431081) 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, 7810965 + ... + 7813604.

It is an arithmetic number, because the mean of its divisors is an integer number (1054658475).

Almost surely, 2^20624431080 is an apocalyptic number.

20624431080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20624431080 is an abundant number, since it is smaller than the sum of its proper divisors (46873711320).

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

20624431080 is a wasteful number, since it uses less digits than its factorization.

20624431080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15624594 (or 15624590 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 20624431080 its reverse (8013442602), we get a palindrome (28637873682).

The spelling of 20624431080 in words is "twenty billion, six hundred twenty-four million, four hundred thirty-one thousand, eighty".