20620073400 has 48 divisors (see below), whose sum is σ = 63922229400. Its totient is φ = 5498686080.

The previous prime is 20620073339. The next prime is 20620073401. The reversal of 20620073400 is 437002602.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620073401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17182795 + ... + 17183994.

Almost surely, 2^20620073400 is an apocalyptic number.

20620073400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20620073400 is an abundant number, since it is smaller than the sum of its proper divisors (43302156000).

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

20620073400 is a wasteful number, since it uses less digits than its factorization.

20620073400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34366808 (or 34366799 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The spelling of 20620073400 in words is "twenty billion, six hundred twenty million, seventy-three thousand, four hundred".