80787378 has 24 divisors (see below), whose sum is σ = 187954992. Its totient is φ = 23082024.

The previous prime is 80787361. The next prime is 80787401. The reversal of 80787378 is 87378708.

It is a super-2 number, since 2×80787378² = 13053200888229768, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137100 + ... + 137687.

It is an arithmetic number, because the mean of its divisors is an integer number (7831458).

Almost surely, 2^80787378 is an apocalyptic number.

80787378 is an abundant number, since it is smaller than the sum of its proper divisors (107167614).

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

80787378 is a wasteful number, since it uses less digits than its factorization.

80787378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274806 (or 274799 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 80787378 is about 8988.1799047416. The cubic root of 80787378 is about 432.2959541804.

The spelling of 80787378 in words is "eighty million, seven hundred eighty-seven thousand, three hundred seventy-eight".