22405901 has 16 divisors (see below), whose sum is σ = 26787840. Its totient is φ = 18336240.

The previous prime is 22405897. The next prime is 22405913. The reversal of 22405901 is 10950422.

It is a cyclic number.

It is not a de Polignac number, because 22405901 - 2² = 22405897 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 (22405961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16490 + ... + 17796.

It is an arithmetic number, because the mean of its divisors is an integer number (1674240).

Almost surely, 2^22405901 is an apocalyptic number.

It is an amenable number.

22405901 is a deficient number, since it is larger than the sum of its proper divisors (4381939).

22405901 is a wasteful number, since it uses less digits than its factorization.

22405901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 22405901 is about 4733.4871923351. The cubic root of 22405901 is about 281.9167007460.

The spelling of 22405901 in words is "twenty-two million, four hundred five thousand, nine hundred one".