22238431 has 8 divisors (see below), whose sum is σ = 23590224. Its totient is φ = 20891520.

The previous prime is 22238413. The next prime is 22238459. The reversal of 22238431 is 13483222.

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 22238431 - 2¹⁵ = 22205663 is a prime.

It is a super-2 number, since 2×22238431² = 989095626683522, 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 = 22238396 and 22238405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238231) 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, 12981 + ... + 14593.

It is an arithmetic number, because the mean of its divisors is an integer number (2948778).

Almost surely, 2^22238431 is an apocalyptic number.

22238431 is a deficient number, since it is larger than the sum of its proper divisors (1351793).

22238431 is a wasteful number, since it uses less digits than its factorization.

22238431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its digits is 2304, while the sum is 25.

The square root of 22238431 is about 4715.7640950327. The cubic root of 22238431 is about 281.2125602179.

The spelling of 22238431 in words is "twenty-two million, two hundred thirty-eight thousand, four hundred thirty-one".