20140021400 has 24 divisors (see below), whose sum is σ = 46825550220. Its totient is φ = 8056008480.

The previous prime is 20140021381. The next prime is 20140021417. The reversal of 20140021400 is 412004102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50349854 + ... + 50350253.

Almost surely, 2^20140021400 is an apocalyptic number.

20140021400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20140021400 is an abundant number, since it is smaller than the sum of its proper divisors (26685528820).

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

20140021400 is a wasteful number, since it uses less digits than its factorization.

20140021400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100700123 (or 100700114 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20140021400 its reverse (412004102), we get a palindrome (20552025502).

The spelling of 20140021400 in words is "twenty billion, one hundred forty million, twenty-one thousand, four hundred".