76840878 has 32 divisors (see below), whose sum is σ = 160312320. Its totient is φ = 24526080.

The previous prime is 76840877. The next prime is 76840879. The reversal of 76840878 is 87804867.

It is an interprime number because it is at equal distance from previous prime (76840877) and next prime (76840879).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76840877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15913 + ... + 20171.

It is an arithmetic number, because the mean of its divisors is an integer number (5009760).

Almost surely, 2^76840878 is an apocalyptic number.

76840878 is an abundant number, since it is smaller than the sum of its proper divisors (83471442).

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

76840878 is a wasteful number, since it uses less digits than its factorization.

76840878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392.

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 76840878 is about 8765.8928809335. The cubic root of 76840878 is about 425.1388298470.

The spelling of 76840878 in words is "seventy-six million, eight hundred forty thousand, eight hundred seventy-eight".