22064431 has 4 divisors (see below), whose sum is σ = 22086864. Its totient is φ = 22042000.

The previous prime is 22064423. The next prime is 22064459. The reversal of 22064431 is 13446022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22064431 - 2³ = 22064423 is a prime.

It is a super-2 number, since 2×22064431² = 973678230707522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22064411) 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 3 ways as a sum of consecutive naturals, for example, 9670 + ... + 11731.

It is an arithmetic number, because the mean of its divisors is an integer number (5521716).

Almost surely, 2^22064431 is an apocalyptic number.

22064431 is a deficient number, since it is larger than the sum of its proper divisors (22433).

22064431 is a wasteful number, since it uses less digits than its factorization.

22064431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22432.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22064431 is about 4697.2791060357. The cubic root of 22064431 is about 280.4772091807.

The spelling of 22064431 in words is "twenty-two million, sixty-four thousand, four hundred thirty-one".