78684382 has 16 divisors (see below), whose sum is σ = 135001440. Its totient is φ = 33693408.

The previous prime is 78684373. The next prime is 78684391. The reversal of 78684382 is 28348687.

It is an interprime number because it is at equal distance from previous prime (78684373) and next prime (78684391).

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, 30528 + ... + 33004.

It is an arithmetic number, because the mean of its divisors is an integer number (8437590).

Almost surely, 2^78684382 is an apocalyptic number.

78684382 is a deficient number, since it is larger than the sum of its proper divisors (56317058).

78684382 is a wasteful number, since it uses less digits than its factorization.

78684382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755.

The product of its digits is 516096, while the sum is 46.

The square root of 78684382 is about 8870.4217487107. The cubic root of 78684382 is about 428.5118595831.

The spelling of 78684382 in words is "seventy-eight million, six hundred eighty-four thousand, three hundred eighty-two".