20404757032 has 32 divisors (see below), whose sum is σ = 41771350080. Its totient is φ = 9267256960.

The previous prime is 20404756973. The next prime is 20404757033. The reversal of 20404757032 is 23075740402.

It is a super-3 number, since 3×20404757032³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20404757033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12828 + ... + 202420.

It is an arithmetic number, because the mean of its divisors is an integer number (1305354690).

Almost surely, 2^20404757032 is an apocalyptic number.

20404757032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20404757032 is an abundant number, since it is smaller than the sum of its proper divisors (21366593048).

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

20404757032 is a wasteful number, since it uses less digits than its factorization.

20404757032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190833 (or 190829 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 34.

The spelling of 20404757032 in words is "twenty billion, four hundred four million, seven hundred fifty-seven thousand, thirty-two".