18376540 has 96 divisors (see below), whose sum is σ = 49674240. Its totient is φ = 5550336.

The previous prime is 18376511. The next prime is 18376597. The reversal of 18376540 is 4567381.

It is a junction number, because it is equal to n+sod(n) for n = 18376496 and 18376505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41641 + ... + 42079.

It is an arithmetic number, because the mean of its divisors is an integer number (517440).

Almost surely, 2^18376540 is an apocalyptic number.

18376540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18376540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24837120).

18376540 is an abundant number, since it is smaller than the sum of its proper divisors (31297700).

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

18376540 is a wasteful number, since it uses less digits than its factorization.

18376540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 18376540 is about 4286.7866753549. The cubic root of 18376540 is about 263.8889761198. Note that the first 3 decimals are identical.

The spelling of 18376540 in words is "eighteen million, three hundred seventy-six thousand, five hundred forty".