78285964 has 12 divisors (see below), whose sum is σ = 141724800. Its totient is φ = 37793168.

The previous prime is 78285953. The next prime is 78286001. The reversal of 78285964 is 46958287.

It is a super-2 number, since 2×78285964² = 12257384318818592, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337324 + ... + 337555.

It is an arithmetic number, because the mean of its divisors is an integer number (11810400).

Almost surely, 2^78285964 is an apocalyptic number.

It is an amenable number.

78285964 is a deficient number, since it is larger than the sum of its proper divisors (63438836).

78285964 is a wasteful number, since it uses less digits than its factorization.

78285964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674912 (or 674910 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 78285964 is about 8847.9355784273. The cubic root of 78285964 is about 427.7873794713.

The spelling of 78285964 in words is "seventy-eight million, two hundred eighty-five thousand, nine hundred sixty-four".