72828178 has 8 divisors (see below), whose sum is σ = 114991920. Its totient is φ = 34497540.

The previous prime is 72828163. The next prime is 72828181. The reversal of 72828178 is 87182827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958228 + ... + 958303.

It is an arithmetic number, because the mean of its divisors is an integer number (14373990).

Almost surely, 2^72828178 is an apocalyptic number.

72828178 is a deficient number, since it is larger than the sum of its proper divisors (42163742).

72828178 is a wasteful number, since it uses less digits than its factorization.

72828178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916552.

The product of its digits is 100352, while the sum is 43.

The square root of 72828178 is about 8533.9426995967. The cubic root of 72828178 is about 417.6057613903.

The spelling of 72828178 in words is "seventy-two million, eight hundred twenty-eight thousand, one hundred seventy-eight".