18428936 has 32 divisors (see below), whose sum is σ = 36590400. Its totient is φ = 8677440.

The previous prime is 18428929. The next prime is 18428941. The reversal of 18428936 is 63982481.

It is a junction number, because it is equal to n+sod(n) for n = 18428893 and 18428902.

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, 39746 + ... + 40206.

It is an arithmetic number, because the mean of its divisors is an integer number (1143450).

Almost surely, 2^18428936 is an apocalyptic number.

It is an amenable number.

18428936 is a deficient number, since it is larger than the sum of its proper divisors (18161464).

18428936 is a wasteful number, since it uses less digits than its factorization.

18428936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 745 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 18428936 is about 4292.8936627874. The cubic root of 18428936 is about 264.1395420850.

The spelling of 18428936 in words is "eighteen million, four hundred twenty-eight thousand, nine hundred thirty-six".