20887874020 has 48 divisors (see below), whose sum is σ = 47599409088. Its totient is φ = 7653559680.

The previous prime is 20887873901. The next prime is 20887874047. The reversal of 20887874020 is 2047878802.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 272574 + ... + 340693.

It is an arithmetic number, because the mean of its divisors is an integer number (991654356).

Almost surely, 2^20887874020 is an apocalyptic number.

20887874020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20887874020 is an abundant number, since it is smaller than the sum of its proper divisors (26711535068).

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

20887874020 is a wasteful number, since it uses less digits than its factorization.

20887874020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613420 (or 613418 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 46.

The spelling of 20887874020 in words is "twenty billion, eight hundred eighty-seven million, eight hundred seventy-four thousand, twenty".