18074428 has 12 divisors (see below), whose sum is σ = 31665760. Its totient is φ = 9027072.

The previous prime is 18074411. The next prime is 18074437. The reversal of 18074428 is 82447081.

It is a hoax number, since the sum of its digits (34) 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 = 18074393 and 18074402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2653 + ... + 6571.

Almost surely, 2^18074428 is an apocalyptic number.

It is an amenable number.

18074428 is a deficient number, since it is larger than the sum of its proper divisors (13591332).

18074428 is a wasteful number, since it uses less digits than its factorization.

18074428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076 (or 5074 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 18074428 is about 4251.4030625195. The cubic root of 18074428 is about 262.4348585147.

The spelling of 18074428 in words is "eighteen million, seventy-four thousand, four hundred twenty-eight".