178397082 has 48 divisors (see below), whose sum is σ = 411832512. Its totient is φ = 55616640.

The previous prime is 178397071. The next prime is 178397083. The reversal of 178397082 is 280793871.

178397082 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×178397082² = 63651037732229448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (178397083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49357 + ... + 52847.

It is an arithmetic number, because the mean of its divisors is an integer number (8579844).

Almost surely, 2^178397082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 178397082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205916256).

178397082 is an abundant number, since it is smaller than the sum of its proper divisors (233435430).

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

178397082 is a wasteful number, since it uses less digits than its factorization.

178397082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683 (or 3680 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 178397082 is about 13356.5370511971. The cubic root of 178397082 is about 562.9406135863.

The spelling of 178397082 in words is "one hundred seventy-eight million, three hundred ninety-seven thousand, eighty-two".