180568440 has 192 divisors, whose sum is σ = 655855200. Its totient is φ = 44416512.

The previous prime is 180568429. The next prime is 180568477. The reversal of 180568440 is 44865081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 180568395 and 180568404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125646 + ... + 127074.

Almost surely, 2^180568440 is an apocalyptic number.

180568440 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 180568440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327927600).

180568440 is an abundant number, since it is smaller than the sum of its proper divisors (475286760).

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

180568440 is a wasteful number, since it uses less digits than its factorization.

180568440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 180568440 is about 13437.5756742055. The cubic root of 180568440 is about 565.2153511186.

The spelling of 180568440 in words is "one hundred eighty million, five hundred sixty-eight thousand, four hundred forty".