20240565400 has 72 divisors (see below), whose sum is σ = 51726415860. Its totient is φ = 7360196800.

The previous prime is 20240565379. The next prime is 20240565403. The reversal of 20240565400 is 456504202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20240565403) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 393994 + ... + 442393.

Almost surely, 2^20240565400 is an apocalyptic number.

20240565400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20240565400 is an abundant number, since it is smaller than the sum of its proper divisors (31485850460).

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

20240565400 is a wasteful number, since it uses less digits than its factorization.

20240565400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836425 (or 836405 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 20240565400 in words is "twenty billion, two hundred forty million, five hundred sixty-five thousand, four hundred".