20624522048 has 56 divisors (see below), whose sum is σ = 44336101320. Its totient is φ = 9518945280.

The previous prime is 20624522047. The next prime is 20624522099. The reversal of 20624522048 is 84022542602.

It can be written as a sum of positive squares in 4 ways, for example, as 4756585024 + 15867937024 = 68968^2 + 125968^2 .

It is a super-2 number, since 2×20624522048² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20624521999 and 20624522017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20624522047) 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, 67268 + ... + 213948.

It is an arithmetic number, because the mean of its divisors is an integer number (791716095).

Almost surely, 2^20624522048 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 20624522048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22168050660).

20624522048 is an abundant number, since it is smaller than the sum of its proper divisors (23711579272).

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

20624522048 is an equidigital number, since it uses as much as digits as its factorization.

20624522048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146732 (or 146696 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The spelling of 20624522048 in words is "twenty billion, six hundred twenty-four million, five hundred twenty-two thousand, forty-eight".