180421344 has 120 divisors (see below), whose sum is σ = 542269728. Its totient is φ = 58821120.

The previous prime is 180421331. The next prime is 180421393. The reversal of 180421344 is 443124081.

It is a super-2 number, since 2×180421344² = 65103722741532672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 121084 + ... + 122564.

Almost surely, 2^180421344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180421344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271134864).

180421344 is an abundant number, since it is smaller than the sum of its proper divisors (361848384).

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

180421344 is a wasteful number, since it uses less digits than its factorization.

180421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 180421344 is about 13432.1012503629. The cubic root of 180421344 is about 565.0618294515.

The spelling of 180421344 in words is "one hundred eighty million, four hundred twenty-one thousand, three hundred forty-four".