20915741 has 24 divisors (see below), whose sum is σ = 26874432. Its totient is φ = 15811200.

The previous prime is 20915723. The next prime is 20915743. The reversal of 20915741 is 14751902.

It is not a de Polignac number, because 20915741 - 2¹⁰ = 20914717 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 (20915743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286481 + ... + 286553.

It is an arithmetic number, because the mean of its divisors is an integer number (1119768).

Almost surely, 2^20915741 is an apocalyptic number.

It is an amenable number.

20915741 is a deficient number, since it is larger than the sum of its proper divisors (5958691).

20915741 is an equidigital number, since it uses as much as digits as its factorization.

20915741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 20915741 is about 4573.3730440453. The cubic root of 20915741 is about 275.5229322492.

The spelling of 20915741 in words is "twenty million, nine hundred fifteen thousand, seven hundred forty-one".