22458021 has 8 divisors (see below), whose sum is σ = 29969280. Its totient is φ = 14959392.

The previous prime is 22458013. The next prime is 22458049. The reversal of 22458021 is 12085422.

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

It is not a de Polignac number, because 22458021 - 2³ = 22458013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22457982 and 22458000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22458011) 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, 2385 + ... + 7113.

It is an arithmetic number, because the mean of its divisors is an integer number (3746160).

Almost surely, 2^22458021 is an apocalyptic number.

It is an amenable number.

22458021 is a deficient number, since it is larger than the sum of its proper divisors (7511259).

22458021 is a wasteful number, since it uses less digits than its factorization.

22458021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 22458021 is about 4738.9894492392. The cubic root of 22458021 is about 282.1351271320.

The spelling of 22458021 in words is "twenty-two million, four hundred fifty-eight thousand, twenty-one".