78345846 has 16 divisors (see below), whose sum is σ = 174102000. Its totient is φ = 26115264.

The previous prime is 78345811. The next prime is 78345853. The reversal of 78345846 is 64854387.

It is a super-2 number, since 2×78345846² = 12276143170911432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725371 + ... + 725478.

It is an arithmetic number, because the mean of its divisors is an integer number (10881375).

Almost surely, 2^78345846 is an apocalyptic number.

78345846 is an abundant number, since it is smaller than the sum of its proper divisors (95756154).

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

78345846 is a wasteful number, since it uses less digits than its factorization.

78345846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450860 (or 1450854 counting only the distinct ones).

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

The square root of 78345846 is about 8851.3188847764. The cubic root of 78345846 is about 427.8964251366.

The spelling of 78345846 in words is "seventy-eight million, three hundred forty-five thousand, eight hundred forty-six".