22372909 has 16 divisors (see below), whose sum is σ = 24842160. Its totient is φ = 20021760.

The previous prime is 22372907. The next prime is 22372919. The reversal of 22372909 is 90927322.

It can be written as a sum of positive squares in 8 ways, for example, as 14516100 + 7856809 = 3810^2 + 2803^2 .

It is a cyclic number.

It is not a de Polignac number, because 22372909 - 2¹ = 22372907 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 (22372907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70419 + ... + 70735.

It is an arithmetic number, because the mean of its divisors is an integer number (1552635).

Almost surely, 2^22372909 is an apocalyptic number.

It is an amenable number.

22372909 is a deficient number, since it is larger than the sum of its proper divisors (2469251).

22372909 is a wasteful number, since it uses less digits than its factorization.

22372909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 22372909 is about 4730.0009513741. Note that the first 3 decimals coincide. The cubic root of 22372909 is about 281.7782615513.

The spelling of 22372909 in words is "twenty-two million, three hundred seventy-two thousand, nine hundred nine".