18050840 has 32 divisors (see below), whose sum is σ = 41111280. Its totient is φ = 7132032.

The previous prime is 18050819. The next prime is 18050843. The reversal of 18050840 is 4805081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18050843) 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, 602 + ... + 6038.

Almost surely, 2^18050840 is an apocalyptic number.

18050840 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 18050840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20555640).

18050840 is an abundant number, since it is smaller than the sum of its proper divisors (23060440).

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

18050840 is a wasteful number, since it uses less digits than its factorization.

18050840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18050840 is about 4248.6280138416. The cubic root of 18050840 is about 262.3206454345.

The spelling of 18050840 in words is "eighteen million, fifty thousand, eight hundred forty".