78504878 has 8 divisors (see below), whose sum is σ = 124684272. Its totient is φ = 36943456.

The previous prime is 78504859. The next prime is 78504919. The reversal of 78504878 is 87840587.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154450 + ... + 1154517.

It is an arithmetic number, because the mean of its divisors is an integer number (15585534).

Almost surely, 2^78504878 is an apocalyptic number.

78504878 is a deficient number, since it is larger than the sum of its proper divisors (46179394).

78504878 is a wasteful number, since it uses less digits than its factorization.

78504878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308986.

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 78504878 is about 8860.2978505240. The cubic root of 78504878 is about 428.1857543773.

The spelling of 78504878 in words is "seventy-eight million, five hundred four thousand, eight hundred seventy-eight".