20874245800 has 24 divisors (see below), whose sum is σ = 48532621950. Its totient is φ = 8349698240.

The previous prime is 20874245767. The next prime is 20874245809. The reversal of 20874245800 is 854247802.

It can be written as a sum of positive squares in 3 ways, for example, as 12708954756 + 8165291044 = 112734^2 + 90362^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (20874245809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52185415 + ... + 52185814.

Almost surely, 2^20874245800 is an apocalyptic number.

20874245800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20874245800 is an abundant number, since it is smaller than the sum of its proper divisors (27658376150).

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

20874245800 is a wasteful number, since it uses less digits than its factorization.

20874245800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104371245 (or 104371236 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The spelling of 20874245800 in words is "twenty billion, eight hundred seventy-four million, two hundred forty-five thousand, eight hundred".