78322986 has 24 divisors (see below), whose sum is σ = 193942944. Its totient is φ = 22377960.

The previous prime is 78322973. The next prime is 78322991. The reversal of 78322986 is 68922387.

It is a super-2 number, since 2×78322986² = 12268980271912392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310680 + ... + 310931.

It is an arithmetic number, because the mean of its divisors is an integer number (8080956).

Almost surely, 2^78322986 is an apocalyptic number.

78322986 is an abundant number, since it is smaller than the sum of its proper divisors (115619958).

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

78322986 is a wasteful number, since it uses less digits than its factorization.

78322986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621626 (or 621623 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 78322986 is about 8850.0274575845. The cubic root of 78322986 is about 427.8548034285.

The spelling of 78322986 in words is "seventy-eight million, three hundred twenty-two thousand, nine hundred eighty-six".