22140454 has 24 divisors (see below), whose sum is σ = 38905920. Its totient is φ = 9421776.

The previous prime is 22140449. The next prime is 22140493. The reversal of 22140454 is 45404122.

It is a happy number.

It is a super-2 number, since 2×22140454² = 980399406652232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14667 + ... + 16105.

It is an arithmetic number, because the mean of its divisors is an integer number (1621080).

Almost surely, 2^22140454 is an apocalyptic number.

22140454 is a deficient number, since it is larger than the sum of its proper divisors (16765466).

22140454 is a wasteful number, since it uses less digits than its factorization.

22140454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 22140454 is about 4705.3643854647. The cubic root of 22140454 is about 280.7989680105.

Adding to 22140454 its reverse (45404122), we get a palindrome (67544576).

The spelling of 22140454 in words is "twenty-two million, one hundred forty thousand, four hundred fifty-four".