180820732 has 12 divisors (see below), whose sum is σ = 316557360. Its totient is φ = 90375776.

The previous prime is 180820727. The next prime is 180820751. The reversal of 180820732 is 237028081.

It is a super-2 number, since 2×180820732² = 65392274242031648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180820694 and 180820703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5793 + ... + 19879.

It is an arithmetic number, because the mean of its divisors is an integer number (26379780).

Almost surely, 2^180820732 is an apocalyptic number.

It is an amenable number.

180820732 is a deficient number, since it is larger than the sum of its proper divisors (135736628).

180820732 is a wasteful number, since it uses less digits than its factorization.

180820732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17300 (or 17298 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 180820732 is about 13446.9599538334. The cubic root of 180820732 is about 565.4784700947.

The spelling of 180820732 in words is "one hundred eighty million, eight hundred twenty thousand, seven hundred thirty-two".