78620782 has 8 divisors (see below), whose sum is σ = 121118616. Its totient is φ = 38247912.

The previous prime is 78620779. The next prime is 78620809. The reversal of 78620782 is 28702687.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531148 + ... + 531295.

It is an arithmetic number, because the mean of its divisors is an integer number (15139827).

Almost surely, 2^78620782 is an apocalyptic number.

78620782 is a deficient number, since it is larger than the sum of its proper divisors (42497834).

78620782 is a wasteful number, since it uses less digits than its factorization.

78620782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062482.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 78620782 is about 8866.8360760758. The cubic root of 78620782 is about 428.3963741472.

The spelling of 78620782 in words is "seventy-eight million, six hundred twenty thousand, seven hundred eighty-two".