18428814 has 24 divisors (see below), whose sum is σ = 40068912. Its totient is φ = 6121440.

The previous prime is 18428807. The next prime is 18428857. The reversal of 18428814 is 41882481.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3999 + ... + 7269.

It is an arithmetic number, because the mean of its divisors is an integer number (1669538).

Almost surely, 2^18428814 is an apocalyptic number.

18428814 is an abundant number, since it is smaller than the sum of its proper divisors (21640098).

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

18428814 is a wasteful number, since it uses less digits than its factorization.

18428814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3592 (or 3589 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 18428814 is about 4292.8794532342. The cubic root of 18428814 is about 264.1389592136.

The spelling of 18428814 in words is "eighteen million, four hundred twenty-eight thousand, eight hundred fourteen".