22342731 has 8 divisors (see below), whose sum is σ = 30817680. Its totient is φ = 14381472.

The previous prime is 22342703. The next prime is 22342739. The reversal of 22342731 is 13724322.

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

It is not a de Polignac number, because 22342731 - 2⁶ = 22342667 is a prime.

It is a super-2 number, since 2×22342731² = 998395257076722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22342739) 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 7 ways as a sum of consecutive naturals, for example, 128320 + ... + 128493.

It is an arithmetic number, because the mean of its divisors is an integer number (3852210).

Almost surely, 2^22342731 is an apocalyptic number.

22342731 is a deficient number, since it is larger than the sum of its proper divisors (8474949).

22342731 is a wasteful number, since it uses less digits than its factorization.

22342731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256845.

The product of its digits is 2016, while the sum is 24.

The square root of 22342731 is about 4726.8098121249. The cubic root of 22342731 is about 281.6515110753.

The spelling of 22342731 in words is "twenty-two million, three hundred forty-two thousand, seven hundred thirty-one".