22438415 has 4 divisors (see below), whose sum is σ = 26926104. Its totient is φ = 17950728.

The previous prime is 22438399. The next prime is 22438421. The reversal of 22438415 is 51483422.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22438415 - 2⁴ = 22438399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243837 + ... + 2243846.

It is an arithmetic number, because the mean of its divisors is an integer number (6731526).

Almost surely, 2^22438415 is an apocalyptic number.

22438415 is a deficient number, since it is larger than the sum of its proper divisors (4487689).

22438415 is an equidigital number, since it uses as much as digits as its factorization.

22438415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487688.

The product of its digits is 7680, while the sum is 29.

The square root of 22438415 is about 4736.9204130954. The cubic root of 22438415 is about 282.0530012882.

It can be divided in two parts, 22438 and 415, that multiplied together give a triangular number (9311770 = T₄₃₁₅).

The spelling of 22438415 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred fifteen".