18925072 has 10 divisors (see below), whose sum is σ = 36667358. Its totient is φ = 9462528.

The previous prime is 18925037. The next prime is 18925087. The reversal of 18925072 is 27052981.

It can be written as a sum of positive squares in only one way, i.e., 10653696 + 8271376 = 3264^2 + 2876^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 591393 + ... + 591424.

Almost surely, 2^18925072 is an apocalyptic number.

It is an amenable number.

18925072 is a deficient number, since it is larger than the sum of its proper divisors (17742286).

18925072 is a wasteful number, since it uses less digits than its factorization.

18925072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182825 (or 1182819 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 18925072 is about 4350.2956221388. The cubic root of 18925072 is about 266.4889343462.

The spelling of 18925072 in words is "eighteen million, nine hundred twenty-five thousand, seventy-two".