22706431 has 8 divisors (see below), whose sum is σ = 25110864. Its totient is φ = 20358720.

The previous prime is 22706429. The next prime is 22706443. The reversal of 22706431 is 13460722.

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 22706431 - 2¹ = 22706429 is a prime.

It is a super-2 number, since 2×22706431² = 1031164017515522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22706396 and 22706405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22706401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13336 + ... + 14941.

It is an arithmetic number, because the mean of its divisors is an integer number (3138858).

Almost surely, 2^22706431 is an apocalyptic number.

22706431 is a deficient number, since it is larger than the sum of its proper divisors (2404433).

22706431 is a wasteful number, since it uses less digits than its factorization.

22706431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28361.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 22706431 is about 4765.1265460636. The cubic root of 22706431 is about 283.1715550114.

The spelling of 22706431 in words is "twenty-two million, seven hundred six thousand, four hundred thirty-one".