18934472 has 8 divisors (see below), whose sum is σ = 35502150. Its totient is φ = 9467232.

The previous prime is 18934471. The next prime is 18934501. The reversal of 18934472 is 27443981.

It can be written as a sum of positive squares in only one way, i.e., 15570916 + 3363556 = 3946^2 + 1834^2 .

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

It is a super-3 number, since 3×18934472³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18934471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1183397 + ... + 1183412.

Almost surely, 2^18934472 is an apocalyptic number.

It is an amenable number.

18934472 is a deficient number, since it is larger than the sum of its proper divisors (16567678).

18934472 is a wasteful number, since it uses less digits than its factorization.

18934472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366815 (or 2366811 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 18934472 is about 4351.3758743643. The cubic root of 18934472 is about 266.5330483370.

The spelling of 18934472 in words is "eighteen million, nine hundred thirty-four thousand, four hundred seventy-two".