20042438200 has 48 divisors (see below), whose sum is σ = 46877780880. Its totient is φ = 7968956160.

The previous prime is 20042438179. The next prime is 20042438209. The reversal of 20042438200 is 283424002.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042438209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266637 + ... + 333436.

It is an arithmetic number, because the mean of its divisors is an integer number (976620435).

Almost surely, 2^20042438200 is an apocalyptic number.

20042438200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20042438200 is an abundant number, since it is smaller than the sum of its proper divisors (26835342680).

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

20042438200 is a wasteful number, since it uses less digits than its factorization.

20042438200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600256 (or 600247 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The spelling of 20042438200 in words is "twenty billion, forty-two million, four hundred thirty-eight thousand, two hundred".