22638435 has 8 divisors (see below), whose sum is σ = 36221520. Its totient is φ = 12073824.

The previous prime is 22638397. The next prime is 22638457. The reversal of 22638435 is 53483622.

It is a happy number.

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

It is not a de Polignac number, because 22638435 - 2¹⁰ = 22637411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22638396 and 22638405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754600 + ... + 754629.

It is an arithmetic number, because the mean of its divisors is an integer number (4527690).

Almost surely, 2^22638435 is an apocalyptic number.

22638435 is a deficient number, since it is larger than the sum of its proper divisors (13583085).

22638435 is a wasteful number, since it uses less digits than its factorization.

22638435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509237.

The product of its digits is 34560, while the sum is 33.

The square root of 22638435 is about 4757.9864438647. The cubic root of 22638435 is about 282.8886133670. Note that the first 3 decimals are identical.

The spelling of 22638435 in words is "twenty-two million, six hundred thirty-eight thousand, four hundred thirty-five".