22372309 has 8 divisors (see below), whose sum is σ = 23195808. Its totient is φ = 21560400.

The previous prime is 22372303. The next prime is 22372319. The reversal of 22372309 is 90327322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22372309 - 2⁵ = 22372277 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22372303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1134 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (2899476).

Almost surely, 2^22372309 is an apocalyptic number.

It is an amenable number.

22372309 is a deficient number, since it is larger than the sum of its proper divisors (823499).

22372309 is a wasteful number, since it uses less digits than its factorization.

22372309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 22372309 is about 4729.9375260145. The cubic root of 22372309 is about 281.7757426050.

The spelling of 22372309 in words is "twenty-two million, three hundred seventy-two thousand, three hundred nine".