78534846 has 80 divisors (see below), whose sum is σ = 192099600. Its totient is φ = 23836032.

The previous prime is 78534829. The next prime is 78534853. The reversal of 78534846 is 64843587.

78534846 is a `hidden beast` number, since 78 + 534 + 8 + 46 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 187225 + ... + 187643.

It is an arithmetic number, because the mean of its divisors is an integer number (2401245).

Almost surely, 2^78534846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78534846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96049800).

78534846 is an abundant number, since it is smaller than the sum of its proper divisors (113564754).

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

78534846 is a wasteful number, since it uses less digits than its factorization.

78534846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 526 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 78534846 is about 8861.9888286998. The cubic root of 78534846 is about 428.2402318339.

The spelling of 78534846 in words is "seventy-eight million, five hundred thirty-four thousand, eight hundred forty-six".