18272948 has 24 divisors (see below), whose sum is σ = 33784128. Its totient is φ = 8630336.

The previous prime is 18272939. The next prime is 18272951. The reversal of 18272948 is 84927281.

It is a super-2 number, since 2×18272948² = 667801257221408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6440 + ... + 8832.

It is an arithmetic number, because the mean of its divisors is an integer number (1407672).

Almost surely, 2^18272948 is an apocalyptic number.

It is an amenable number.

18272948 is a deficient number, since it is larger than the sum of its proper divisors (15511180).

18272948 is a wasteful number, since it uses less digits than its factorization.

18272948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 2501 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 18272948 is about 4274.6868891183. The cubic root of 18272948 is about 263.3921775599.

The spelling of 18272948 in words is "eighteen million, two hundred seventy-two thousand, nine hundred forty-eight".