22126431 has 8 divisors (see below), whose sum is σ = 31054720. Its totient is φ = 13974552.

The previous prime is 22126427. The next prime is 22126439. The reversal of 22126431 is 13462122.

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

It is not a de Polignac number, because 22126431 - 2² = 22126427 is a prime.

It is a super-2 number, since 2×22126431² = 979157897595522, 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 = 22126398 and 22126407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22126439) 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, 194035 + ... + 194148.

It is an arithmetic number, because the mean of its divisors is an integer number (3881840).

Almost surely, 2^22126431 is an apocalyptic number.

22126431 is a deficient number, since it is larger than the sum of its proper divisors (8928289).

22126431 is a wasteful number, since it uses less digits than its factorization.

22126431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388205.

The product of its digits is 576, while the sum is 21.

The square root of 22126431 is about 4703.8740416810. The cubic root of 22126431 is about 280.7396726961.

Adding to 22126431 its reverse (13462122), we get a palindrome (35588553).

The spelling of 22126431 in words is "twenty-two million, one hundred twenty-six thousand, four hundred thirty-one".