18650028 has 12 divisors (see below), whose sum is σ = 43516760. Its totient is φ = 6216672.

The previous prime is 18649979. The next prime is 18650041. The reversal of 18650028 is 82005681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18649977 and 18650004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777073 + ... + 777096.

Almost surely, 2^18650028 is an apocalyptic number.

It is an amenable number.

18650028 is an abundant number, since it is smaller than the sum of its proper divisors (24866732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18650028 is a wasteful number, since it uses less digits than its factorization.

18650028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554176 (or 1554174 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18650028 is about 4318.5678181545. The cubic root of 18650028 is about 265.1916401843.

The spelling of 18650028 in words is "eighteen million, six hundred fifty thousand, twenty-eight".