22236945 has 32 divisors (see below), whose sum is σ = 36796032. Its totient is φ = 11461632.

The previous prime is 22236943. The next prime is 22236953. The reversal of 22236945 is 54963222.

It is not a de Polignac number, because 22236945 - 2¹ = 22236943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22236943) 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, 65817 + ... + 66153.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^22236945 is an apocalyptic number.

It is an amenable number.

22236945 is a deficient number, since it is larger than the sum of its proper divisors (14559087).

22236945 is a wasteful number, since it uses less digits than its factorization.

22236945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its digits is 25920, while the sum is 33.

The square root of 22236945 is about 4715.6065357491. The cubic root of 22236945 is about 281.2062964191.

The spelling of 22236945 in words is "twenty-two million, two hundred thirty-six thousand, nine hundred forty-five".