80942178 has 48 divisors (see below), whose sum is σ = 171604224. Its totient is φ = 25425120.

The previous prime is 80942167. The next prime is 80942179. The reversal of 80942178 is 87124908.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80942179) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 410776 + ... + 410972.

It is an arithmetic number, because the mean of its divisors is an integer number (3575088).

Almost surely, 2^80942178 is an apocalyptic number.

80942178 is an abundant number, since it is smaller than the sum of its proper divisors (90662046).

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

80942178 is a wasteful number, since it uses less digits than its factorization.

80942178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 80942178 is about 8996.7870931794. The cubic root of 80942178 is about 432.5718913316.

The spelling of 80942178 in words is "eighty million, nine hundred forty-two thousand, one hundred seventy-eight".