180439340 has 12 divisors (see below), whose sum is σ = 378922656. Its totient is φ = 72175728.

The previous prime is 180439307. The next prime is 180439361. The reversal of 180439340 is 43934081.

It is a junction number, because it is equal to n+sod(n) for n = 180439297 and 180439306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4510964 + ... + 4511003.

It is an arithmetic number, because the mean of its divisors is an integer number (31576888).

Almost surely, 2^180439340 is an apocalyptic number.

180439340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180439340 is an abundant number, since it is smaller than the sum of its proper divisors (198483316).

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

180439340 is a wasteful number, since it uses less digits than its factorization.

180439340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021976 (or 9021974 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 180439340 is about 13432.7711214031. The cubic root of 180439340 is about 565.0806160584.

The spelling of 180439340 in words is "one hundred eighty million, four hundred thirty-nine thousand, three hundred forty".