18628084 has 6 divisors (see below), whose sum is σ = 32599154. Its totient is φ = 9314040.

The previous prime is 18628081. The next prime is 18628097. The reversal of 18628084 is 48082681.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 51984 = 4310^2 + 228^2 .

It is a super-2 number, since 2×18628084² = 694011027022112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18628081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2328507 + ... + 2328514.

Almost surely, 2^18628084 is an apocalyptic number.

It is an amenable number.

18628084 is a deficient number, since it is larger than the sum of its proper divisors (13971070).

18628084 is a wasteful number, since it uses less digits than its factorization.

18628084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657025 (or 4657023 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 18628084 is about 4316.0264132649. The cubic root of 18628084 is about 265.0875894157.

The spelling of 18628084 in words is "eighteen million, six hundred twenty-eight thousand, eighty-four".