180867840 has 288 divisors, whose sum is σ = 633803520. Its totient is φ = 43794432.

The previous prime is 180867823. The next prime is 180867887. The reversal of 180867840 is 48768081.

It is a junction number, because it is equal to n+sod(n) for n = 180867792 and 180867801.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2699487 + ... + 2699553.

Almost surely, 2^180867840 is an apocalyptic number.

180867840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180867840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316901760).

180867840 is an abundant number, since it is smaller than the sum of its proper divisors (452935680).

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

180867840 is a wasteful number, since it uses less digits than its factorization.

180867840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 180867840 is about 13448.7114624413. The cubic root of 180867840 is about 565.5275725888.

The spelling of 180867840 in words is "one hundred eighty million, eight hundred sixty-seven thousand, eight hundred forty".