22138462 has 4 divisors (see below), whose sum is σ = 33207696. Its totient is φ = 11069230.

The previous prime is 22138429. The next prime is 22138481. The reversal of 22138462 is 26483122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×22138462² = 980222999450888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22138462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5534614 + ... + 5534617.

It is an arithmetic number, because the mean of its divisors is an integer number (8301924).

Almost surely, 2^22138462 is an apocalyptic number.

22138462 is a deficient number, since it is larger than the sum of its proper divisors (11069234).

22138462 is a wasteful number, since it uses less digits than its factorization.

22138462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069233.

The product of its digits is 4608, while the sum is 28.

The square root of 22138462 is about 4705.1527074049. The cubic root of 22138462 is about 280.7905464982.

It can be divided in two parts, 221 and 38462, that added together give a palindrome (38683).

The spelling of 22138462 in words is "twenty-two million, one hundred thirty-eight thousand, four hundred sixty-two".