78810336 has 72 divisors (see below), whose sum is σ = 244500984. Its totient is φ = 23880960.

The previous prime is 78810331. The next prime is 78810341. The reversal of 78810336 is 63301887.

It is an interprime number because it is at equal distance from previous prime (78810331) and next prime (78810341).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×78810336² = 12422138120865792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 78810336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78810331) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9271 + ... + 15606.

It is an arithmetic number, because the mean of its divisors is an integer number (3395847).

Almost surely, 2^78810336 is an apocalyptic number.

It is an amenable number.

78810336 is an abundant number, since it is smaller than the sum of its proper divisors (165690648).

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

78810336 is a wasteful number, since it uses less digits than its factorization.

78810336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24904 (or 24893 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 78810336 is about 8877.5185722137. The cubic root of 78810336 is about 428.7403844313.

The spelling of 78810336 in words is "seventy-eight million, eight hundred ten thousand, three hundred thirty-six".