78322678 has 64 divisors (see below), whose sum is σ = 147456000. Its totient is φ = 31116960.

The previous prime is 78322663. The next prime is 78322687. The reversal of 78322678 is 87622387.

It is a super-2 number, since 2×78322678² = 12268883778183368, which contains 22 as substring.

Its product of digits (225792) is a multiple of the sum of its prime divisors (196).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616651 + ... + 616777.

It is an arithmetic number, because the mean of its divisors is an integer number (2304000).

Almost surely, 2^78322678 is an apocalyptic number.

78322678 is a deficient number, since it is larger than the sum of its proper divisors (69133322).

78322678 is a wasteful number, since it uses less digits than its factorization.

78322678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 196 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 78322678 is about 8850.0100564915. The cubic root of 78322678 is about 427.8542425907.

The spelling of 78322678 in words is "seventy-eight million, three hundred twenty-two thousand, six hundred seventy-eight".