180982640 has 40 divisors (see below), whose sum is σ = 422212560. Its totient is φ = 72147456.

The previous prime is 180982631. The next prime is 180982667. The reversal of 180982640 is 46289081.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 180982594 and 180982603.

It is a congruent number.

It is an unprimeable number.

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, 20876 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (10555314).

Almost surely, 2^180982640 is an apocalyptic number.

180982640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180982640 is an abundant number, since it is smaller than the sum of its proper divisors (241229920).

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

180982640 is a wasteful number, since it uses less digits than its factorization.

180982640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689 (or 7683 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 180982640 is about 13452.9788522840. The cubic root of 180982640 is about 565.6471973829.

The spelling of 180982640 in words is "one hundred eighty million, nine hundred eighty-two thousand, six hundred forty".