178728968 has 64 divisors (see below), whose sum is σ = 378777600. Its totient is φ = 78361920.

The previous prime is 178728937. The next prime is 178728971. The reversal of 178728968 is 869827871.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326471 + ... + 327017.

It is an arithmetic number, because the mean of its divisors is an integer number (5918400).

Almost surely, 2^178728968 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 178728968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189388800).

178728968 is an abundant number, since it is smaller than the sum of its proper divisors (200048632).

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

178728968 is a wasteful number, since it uses less digits than its factorization.

178728968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 686 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 56.

The square root of 178728968 is about 13368.9553817791. The cubic root of 178728968 is about 563.2894914315.

The spelling of 178728968 in words is "one hundred seventy-eight million, seven hundred twenty-eight thousand, nine hundred sixty-eight".