22401534 has 16 divisors (see below), whose sum is σ = 45343872. Its totient is φ = 7377048.

The previous prime is 22401527. The next prime is 22401541. The reversal of 22401534 is 43510422.

It is an interprime number because it is at equal distance from previous prime (22401527) and next prime (22401541).

It is a self number, because there is not a number n which added to its sum of digits gives 22401534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21994 + ... + 22989.

It is an arithmetic number, because the mean of its divisors is an integer number (2833992).

Almost surely, 2^22401534 is an apocalyptic number.

22401534 is an abundant number, since it is smaller than the sum of its proper divisors (22942338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22401534 is a wasteful number, since it uses less digits than its factorization.

22401534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45071.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22401534 is about 4733.0258820336. The cubic root of 22401534 is about 281.8983839906.

Adding to 22401534 its reverse (43510422), we get a palindrome (65911956).

The spelling of 22401534 in words is "twenty-two million, four hundred one thousand, five hundred thirty-four".