22421239 has 8 divisors (see below), whose sum is σ = 22896720. Its totient is φ = 21949056.

The previous prime is 22421233. The next prime is 22421281. The reversal of 22421239 is 93212422.

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

It is a cyclic number.

It is not a de Polignac number, because 22421239 - 2⁷ = 22421111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421233) 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, 16639 + ... + 17935.

It is an arithmetic number, because the mean of its divisors is an integer number (2862090).

Almost surely, 2^22421239 is an apocalyptic number.

22421239 is a deficient number, since it is larger than the sum of its proper divisors (475481).

22421239 is a wasteful number, since it uses less digits than its factorization.

22421239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649.

The product of its digits is 1728, while the sum is 25.

The square root of 22421239 is about 4735.1070737630. The cubic root of 22421239 is about 281.9810149350.

It can be divided in two parts, 2242 and 1239, that added together give a square (3481 = 59²).

The spelling of 22421239 in words is "twenty-two million, four hundred twenty-one thousand, two hundred thirty-nine".