18242344 has 8 divisors (see below), whose sum is σ = 34204410. Its totient is φ = 9121168.

The previous prime is 18242333. The next prime is 18242359. The reversal of 18242344 is 44324281.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16892100 + 1350244 = 4110^2 + 1162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18242344² = 665566229228672, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140139 + ... + 1140154.

Almost surely, 2^18242344 is an apocalyptic number.

It is an amenable number.

18242344 is a deficient number, since it is larger than the sum of its proper divisors (15962066).

18242344 is a wasteful number, since it uses less digits than its factorization.

18242344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280299 (or 2280295 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 18242344 is about 4271.1057116396. The cubic root of 18242344 is about 263.2450500764.

The spelling of 18242344 in words is "eighteen million, two hundred forty-two thousand, three hundred forty-four".