18288974 has 32 divisors (see below), whose sum is σ = 32140800. Its totient is φ = 7712640.

The previous prime is 18288973. The next prime is 18288983. The reversal of 18288974 is 47988281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18288971) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 29237 + ... + 29855.

It is an arithmetic number, because the mean of its divisors is an integer number (1004400).

Almost surely, 2^18288974 is an apocalyptic number.

18288974 is a deficient number, since it is larger than the sum of its proper divisors (13851826).

18288974 is a wasteful number, since it uses less digits than its factorization.

18288974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its digits is 258048, while the sum is 47.

The square root of 18288974 is about 4276.5610015525. The cubic root of 18288974 is about 263.4691563743.

The spelling of 18288974 in words is "eighteen million, two hundred eighty-eight thousand, nine hundred seventy-four".