22152418 has 8 divisors (see below), whose sum is σ = 34126812. Its totient is φ = 10776816.

The previous prime is 22152413. The next prime is 22152421. The reversal of 22152418 is 81425122.

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 4149369 = 4243^2 + 2037^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22152392 and 22152401.

It is not an unprimeable number, because it can be changed into a prime (22152413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149605 + ... + 149752.

Almost surely, 2^22152418 is an apocalyptic number.

22152418 is a deficient number, since it is larger than the sum of its proper divisors (11974394).

22152418 is a wasteful number, since it uses less digits than its factorization.

22152418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299396.

The product of its digits is 1280, while the sum is 25.

The square root of 22152418 is about 4706.6355286978. The cubic root of 22152418 is about 280.8495371921.

The spelling of 22152418 in words is "twenty-two million, one hundred fifty-two thousand, four hundred eighteen".