18820932 has 24 divisors (see below), whose sum is σ = 47294016. Its totient is φ = 5791008.

The previous prime is 18820931. The next prime is 18820943. The reversal of 18820932 is 23902881.

It is a junction number, because it is equal to n+sod(n) for n = 18820893 and 18820902.

It is not an unprimeable number, because it can be changed into a prime (18820931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60168 + ... + 60479.

It is an arithmetic number, because the mean of its divisors is an integer number (1970584).

Almost surely, 2^18820932 is an apocalyptic number.

18820932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18820932 is an abundant number, since it is smaller than the sum of its proper divisors (28473084).

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

18820932 is a wasteful number, since it uses less digits than its factorization.

18820932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120667 (or 120665 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18820932 is about 4338.3098091307. The cubic root of 18820932 is about 265.9992273895. Note that the first 3 decimals are identical.

The spelling of 18820932 in words is "eighteen million, eight hundred twenty thousand, nine hundred thirty-two".