18950040 has 48 divisors (see below), whose sum is σ = 61588800. Its totient is φ = 5053248.

The previous prime is 18950039. The next prime is 18950069. The reversal of 18950040 is 4005981.

It is a junction number, because it is equal to n+sod(n) for n = 18949986 and 18950013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25960 + ... + 26679.

It is an arithmetic number, because the mean of its divisors is an integer number (1283100).

Almost surely, 2^18950040 is an apocalyptic number.

18950040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18950040 is an abundant number, since it is smaller than the sum of its proper divisors (42638760).

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

18950040 is a wasteful number, since it uses less digits than its factorization.

18950040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52656 (or 52649 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 18950040 is about 4353.1643662972. The cubic root of 18950040 is about 266.6060765119.

The spelling of 18950040 in words is "eighteen million, nine hundred fifty thousand, forty".