18423960 has 32 divisors (see below), whose sum is σ = 55272240. Its totient is φ = 4913024.

The previous prime is 18423949. The next prime is 18423967. The reversal of 18423960 is 6932481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18423967) 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, 76647 + ... + 76886.

Almost surely, 2^18423960 is an apocalyptic number.

18423960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18423960 is an abundant number, since it is smaller than the sum of its proper divisors (36848280).

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

18423960 is a wasteful number, since it uses less digits than its factorization.

18423960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153547 (or 153543 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 18423960 is about 4292.3140612029. The cubic root of 18423960 is about 264.1157664914.

The spelling of 18423960 in words is "eighteen million, four hundred twenty-three thousand, nine hundred sixty".