20404741 has 12 divisors (see below), whose sum is σ = 23686752. Its totient is φ = 17218656.

The previous prime is 20404739. The next prime is 20404753. The reversal of 20404741 is 14740402.

It is not a de Polignac number, because 20404741 - 2¹ = 20404739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404711) 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, 37030 + ... + 37576.

It is an arithmetic number, because the mean of its divisors is an integer number (1973896).

Almost surely, 2^20404741 is an apocalyptic number.

It is an amenable number.

20404741 is a deficient number, since it is larger than the sum of its proper divisors (3282011).

20404741 is an frugal number, since it uses more digits than its factorization.

20404741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 20404741 is about 4517.1607232863. The cubic root of 20404741 is about 273.2606070972.

The spelling of 20404741 in words is "twenty million, four hundred four thousand, seven hundred forty-one".