22470391 has 2 divisors, whose sum is σ = 22470392. Its totient is φ = 22470390.

The previous prime is 22470373. The next prime is 22470401. The reversal of 22470391 is 19307422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22470391 - 2⁷ = 22470263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22470361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11235195 + 11235196.

It is an arithmetic number, because the mean of its divisors is an integer number (11235196).

Almost surely, 2^22470391 is an apocalyptic number.

22470391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22470391 is an equidigital number, since it uses as much as digits as its factorization.

22470391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 22470391 is about 4740.2944001401. The cubic root of 22470391 is about 282.1869181446.

The spelling of 22470391 in words is "twenty-two million, four hundred seventy thousand, three hundred ninety-one".