20642280600 has 96 divisors (see below), whose sum is σ = 67755283920. Its totient is φ = 5180805120.

The previous prime is 20642280563. The next prime is 20642280611. The reversal of 20642280600 is 608224602.

It is a super-2 number, since 2×20642280600² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1001677 + ... + 1022076.

Almost surely, 2^20642280600 is an apocalyptic number.

20642280600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20642280600 is an abundant number, since it is smaller than the sum of its proper divisors (47113003320).

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

20642280600 is a wasteful number, since it uses less digits than its factorization.

20642280600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023789 (or 2023780 counting only the distinct ones).

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

The spelling of 20642280600 in words is "twenty billion, six hundred forty-two million, two hundred eighty thousand, six hundred".