18337028 has 12 divisors (see below), whose sum is σ = 32542272. Its totient is φ = 9039240.

The previous prime is 18337013. The next prime is 18337037. The reversal of 18337028 is 82073381.

It is a junction number, because it is equal to n+sod(n) for n = 18336985 and 18337003.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 32000 + ... + 32567.

It is an arithmetic number, because the mean of its divisors is an integer number (2711856).

Almost surely, 2^18337028 is an apocalyptic number.

It is an amenable number.

18337028 is a deficient number, since it is larger than the sum of its proper divisors (14205244).

18337028 is a wasteful number, since it uses less digits than its factorization.

18337028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64642 (or 64640 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18337028 is about 4282.1756152685. The cubic root of 18337028 is about 263.6997082970.

The spelling of 18337028 in words is "eighteen million, three hundred thirty-seven thousand, twenty-eight".