20040492020 has 48 divisors (see below), whose sum is σ = 43928317440. Its totient is φ = 7665309696.

The previous prime is 20040492011. The next prime is 20040492053. The reversal of 20040492020 is 2029404002.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2557829 + ... + 2565651.

It is an arithmetic number, because the mean of its divisors is an integer number (915173280).

Almost surely, 2^20040492020 is an apocalyptic number.

20040492020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040492020 is an abundant number, since it is smaller than the sum of its proper divisors (23887825420).

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

20040492020 is a wasteful number, since it uses less digits than its factorization.

20040492020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13424 (or 13422 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20040492020 its reverse (2029404002), we get a palindrome (22069896022).

The spelling of 20040492020 in words is "twenty billion, forty million, four hundred ninety-two thousand, twenty".