18533242 has 32 divisors (see below), whose sum is σ = 34675200. Its totient is φ = 7233408.

The previous prime is 18533231. The next prime is 18533261. The reversal of 18533242 is 24233581.

It is a self number, because there is not a number n which added to its sum of digits gives 18533242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13734 + ... + 15022.

It is an arithmetic number, because the mean of its divisors is an integer number (1083600).

Almost surely, 2^18533242 is an apocalyptic number.

18533242 is a deficient number, since it is larger than the sum of its proper divisors (16141958).

18533242 is a wasteful number, since it uses less digits than its factorization.

18533242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390.

The product of its digits is 5760, while the sum is 28.

The square root of 18533242 is about 4305.0252031783. The cubic root of 18533242 is about 264.6369396305.

The spelling of 18533242 in words is "eighteen million, five hundred thirty-three thousand, two hundred forty-two".