18932140 has 12 divisors (see below), whose sum is σ = 39757536. Its totient is φ = 7572848.

The previous prime is 18932131. The next prime is 18932141. The reversal of 18932140 is 4123981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18932099 and 18932108.

It is not an unprimeable number, because it can be changed into a prime (18932141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473284 + ... + 473323.

It is an arithmetic number, because the mean of its divisors is an integer number (3313128).

Almost surely, 2^18932140 is an apocalyptic number.

18932140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18932140 is an abundant number, since it is smaller than the sum of its proper divisors (20825396).

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

18932140 is a wasteful number, since it uses less digits than its factorization.

18932140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946616 (or 946614 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18932140 is about 4351.1079048904. The cubic root of 18932140 is about 266.5221056749.

The spelling of 18932140 in words is "eighteen million, nine hundred thirty-two thousand, one hundred forty".