22415945 has 32 divisors (see below), whose sum is σ = 30191616. Its totient is φ = 15897600.

The previous prime is 22415941. The next prime is 22415963. The reversal of 22415945 is 54951422.

It is not a de Polignac number, because 22415945 - 2² = 22415941 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22415941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123755 + ... + 123935.

It is an arithmetic number, because the mean of its divisors is an integer number (943488).

Almost surely, 2^22415945 is an apocalyptic number.

It is an amenable number.

22415945 is a deficient number, since it is larger than the sum of its proper divisors (7775671).

22415945 is a wasteful number, since it uses less digits than its factorization.

22415945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 14400, while the sum is 32.

The square root of 22415945 is about 4734.5480248911. The cubic root of 22415945 is about 281.9588198339.

The spelling of 22415945 in words is "twenty-two million, four hundred fifteen thousand, nine hundred forty-five".