78107874 has 32 divisors (see below), whose sum is σ = 169794240. Its totient is φ = 23810112.

The previous prime is 78107873. The next prime is 78107893. The reversal of 78107874 is 47870187.

It is a super-2 number, since 2×78107874² = 12201679961599752, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (78107873) 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, 3909 + ... + 13095.

It is an arithmetic number, because the mean of its divisors is an integer number (5306070).

Almost surely, 2^78107874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78107874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84897120).

78107874 is an abundant number, since it is smaller than the sum of its proper divisors (91686366).

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

78107874 is a wasteful number, since it uses less digits than its factorization.

78107874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314.

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 78107874 is about 8837.8659188743. The cubic root of 78107874 is about 427.4627470018.

The spelling of 78107874 in words is "seventy-eight million, one hundred seven thousand, eight hundred seventy-four".