18242424 has 24 divisors (see below), whose sum is σ = 49406760. Its totient is φ = 6080784.

The previous prime is 18242423. The next prime is 18242431. The reversal of 18242424 is 42424281.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

18242424 is a modest number, since divided by 2424 gives 1824 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18242423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126612 + ... + 126755.

It is an arithmetic number, because the mean of its divisors is an integer number (2058615).

Almost surely, 2^18242424 is an apocalyptic number.

It is an amenable number.

18242424 is an abundant number, since it is smaller than the sum of its proper divisors (31164336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18242424 is a wasteful number, since it uses less digits than its factorization.

18242424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253379 (or 253372 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 18242424 is about 4271.1150768857. The cubic root of 18242424 is about 263.2454348875.

The spelling of 18242424 in words is "eighteen million, two hundred forty-two thousand, four hundred twenty-four".