18433428 has 24 divisors (see below), whose sum is σ = 46320288. Its totient is φ = 5671776.

The previous prime is 18433417. The next prime is 18433433. The reversal of 18433428 is 82433481.

It is a congruent 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, 58926 + ... + 59237.

It is an arithmetic number, because the mean of its divisors is an integer number (1930012).

Almost surely, 2^18433428 is an apocalyptic number.

It is an amenable number.

18433428 is an abundant number, since it is smaller than the sum of its proper divisors (27886860).

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

18433428 is a wasteful number, since it uses less digits than its factorization.

18433428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118183 (or 118181 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 18433428 is about 4293.4168211344. The cubic root of 18433428 is about 264.1610014254.

The spelling of 18433428 in words is "eighteen million, four hundred thirty-three thousand, four hundred twenty-eight".