18969028 has 24 divisors (see below), whose sum is σ = 35929152. Its totient is φ = 8710944.

The previous prime is 18969007. The next prime is 18969047. The reversal of 18969028 is 82096981.

It is a happy 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, 11001 + ... + 12607.

It is an arithmetic number, because the mean of its divisors is an integer number (1497048).

Almost surely, 2^18969028 is an apocalyptic number.

It is an amenable number.

18969028 is a deficient number, since it is larger than the sum of its proper divisors (16960124).

18969028 is a wasteful number, since it uses less digits than its factorization.

18969028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 18969028 is about 4355.3447624729. The cubic root of 18969028 is about 266.6950934974.

The spelling of 18969028 in words is "eighteen million, nine hundred sixty-nine thousand, twenty-eight".