18950540 has 48 divisors (see below), whose sum is σ = 45760512. Its totient is φ = 6457536.

The previous prime is 18950537. The next prime is 18950557. The reversal of 18950540 is 4505981.

It is a junction number, because it is equal to n+sod(n) for n = 18950497 and 18950506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30917 + ... + 31523.

It is an arithmetic number, because the mean of its divisors is an integer number (953344).

Almost surely, 2^18950540 is an apocalyptic number.

18950540 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 18950540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22880256).

18950540 is an abundant number, since it is smaller than the sum of its proper divisors (26809972).

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

18950540 is a wasteful number, since it uses less digits than its factorization.

18950540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 18950540 is about 4353.2217954062. The cubic root of 18950540 is about 266.6084213067.

The spelling of 18950540 in words is "eighteen million, nine hundred fifty thousand, five hundred forty".