22274639 has 8 divisors (see below), whose sum is σ = 23124960. Its totient is φ = 21429856.

The previous prime is 22274621. The next prime is 22274671. The reversal of 22274639 is 93647222.

It is a happy number.

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 22274639 - 2⁸ = 22274383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22274599 and 22274608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22274039) 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, 7982 + ... + 10404.

It is an arithmetic number, because the mean of its divisors is an integer number (2890620).

Almost surely, 2^22274639 is an apocalyptic number.

22274639 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

22274639 is a deficient number, since it is larger than the sum of its proper divisors (850321).

22274639 is a wasteful number, since it uses less digits than its factorization.

22274639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769.

The product of its digits is 36288, while the sum is 35.

The square root of 22274639 is about 4719.6015721669. The cubic root of 22274639 is about 281.3650983066.

The spelling of 22274639 in words is "twenty-two million, two hundred seventy-four thousand, six hundred thirty-nine".