18270424 has 8 divisors (see below), whose sum is σ = 34257060. Its totient is φ = 9135208.

The previous prime is 18270391. The next prime is 18270437. The reversal of 18270424 is 42407281.

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

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 a junction number, because it is equal to n+sod(n) for n = 18270392 and 18270401.

It is a congruent number.

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, 1141894 + ... + 1141909.

Almost surely, 2^18270424 is an apocalyptic number.

It is an amenable number.

18270424 is a deficient number, since it is larger than the sum of its proper divisors (15986636).

18270424 is a wasteful number, since it uses less digits than its factorization.

18270424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283809 (or 2283805 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 18270424 is about 4274.3916526215. The cubic root of 18270424 is about 263.3800497510.

The spelling of 18270424 in words is "eighteen million, two hundred seventy thousand, four hundred twenty-four".