18725234 has 12 divisors (see below), whose sum is σ = 30873822. Its totient is φ = 8511360.

The previous prime is 18725207. The next prime is 18725237. The reversal of 18725234 is 43252781.

It can be written as a sum of positive squares in only one way, i.e., 16834609 + 1890625 = 4103^2 + 1375^2 .

It is a super-3 number, since 3×18725234³ (a number of 23 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18725234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18725237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38447 + ... + 38930.

Almost surely, 2^18725234 is an apocalyptic number.

18725234 is a deficient number, since it is larger than the sum of its proper divisors (12148588).

18725234 is a wasteful number, since it uses less digits than its factorization.

18725234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77401 (or 77390 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 18725234 is about 4327.2663426233. The cubic root of 18725234 is about 265.5476227492.

The spelling of 18725234 in words is "eighteen million, seven hundred twenty-five thousand, two hundred thirty-four".