22405941 has 18 divisors (see below), whose sum is σ = 32894082. Its totient is φ = 14695200.

The previous prime is 22405937. The next prime is 22405961. The reversal of 22405941 is 14950422.

It can be written as a sum of positive squares in 3 ways, for example, as 4639716 + 17766225 = 2154^2 + 4215^2 .

It is not a de Polignac number, because 22405941 - 2² = 22405937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22405961) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 142635 + ... + 142791.

It is an arithmetic number, because the mean of its divisors is an integer number (1827449).

Almost surely, 2^22405941 is an apocalyptic number.

It is an amenable number.

22405941 is a deficient number, since it is larger than the sum of its proper divisors (10488141).

22405941 is a wasteful number, since it uses less digits than its factorization.

22405941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 22405941 is about 4733.4914175479. The cubic root of 22405941 is about 281.9168685093.

The spelling of 22405941 in words is "twenty-two million, four hundred five thousand, nine hundred forty-one".