22730905 has 16 divisors (see below), whose sum is σ = 28698624. Its totient is φ = 17259840.

The previous prime is 22730899. The next prime is 22730909. The reversal of 22730905 is 50903722.

It is not a de Polignac number, because 22730905 - 2¹¹ = 22728857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22730909) 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, 6832 + ... + 9598.

It is an arithmetic number, because the mean of its divisors is an integer number (1793664).

Almost surely, 2^22730905 is an apocalyptic number.

It is an amenable number.

22730905 is a deficient number, since it is larger than the sum of its proper divisors (5967719).

22730905 is a wasteful number, since it uses less digits than its factorization.

22730905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 22730905 is about 4767.6938869856. The cubic root of 22730905 is about 283.2732567743.

The spelling of 22730905 in words is "twenty-two million, seven hundred thirty thousand, nine hundred five".