22401538 has 8 divisors (see below), whose sum is σ = 34383888. Its totient is φ = 10940244.

The previous prime is 22401527. The next prime is 22401541. The reversal of 22401538 is 83510422.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130156 + ... + 130327.

It is an arithmetic number, because the mean of its divisors is an integer number (4297986).

Almost surely, 2^22401538 is an apocalyptic number.

22401538 is a deficient number, since it is larger than the sum of its proper divisors (11982350).

22401538 is a wasteful number, since it uses less digits than its factorization.

22401538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260528.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22401538 is about 4733.0263045962. The cubic root of 22401538 is about 281.8984007691.

The spelling of 22401538 in words is "twenty-two million, four hundred one thousand, five hundred thirty-eight".