18323628 has 24 divisors (see below), whose sum is σ = 43136688. Its totient is φ = 6053376.

The previous prime is 18323623. The next prime is 18323647. The reversal of 18323628 is 82632381.

It is a super-3 number, since 3×18323628³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18323623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5401 + ... + 8112.

It is an arithmetic number, because the mean of its divisors is an integer number (1797362).

Almost surely, 2^18323628 is an apocalyptic number.

It is an amenable number.

18323628 is an abundant number, since it is smaller than the sum of its proper divisors (24813060).

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

18323628 is a wasteful number, since it uses less digits than its factorization.

18323628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633 (or 13631 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 18323628 is about 4280.6107040935. The cubic root of 18323628 is about 263.6354587509.

It can be divided in two parts, 1832 and 3628, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 18323628 in words is "eighteen million, three hundred twenty-three thousand, six hundred twenty-eight".