73686378 has 8 divisors (see below), whose sum is σ = 147372768. Its totient is φ = 24562124.

The previous prime is 73686373. The next prime is 73686397. The reversal of 73686378 is 87368637.

It is a sphenic number, since it is the product of 3 distinct primes.

73686378 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (73686373) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6140526 + ... + 6140537.

It is an arithmetic number, because the mean of its divisors is an integer number (18421596).

Almost surely, 2^73686378 is an apocalyptic number.

73686378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

73686378 is a wasteful number, since it uses less digits than its factorization.

73686378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12281068.

The product of its digits is 1016064, while the sum is 48.

The square root of 73686378 is about 8584.0770033825. The cubic root of 73686378 is about 419.2397016098.

The spelling of 73686378 in words is "seventy-three million, six hundred eighty-six thousand, three hundred seventy-eight".