78304087 has 8 divisors (see below), whose sum is σ = 78980400. Its totient is φ = 77630784.

The previous prime is 78304067. The next prime is 78304097. The reversal of 78304087 is 78040387.

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

It is a cyclic number.

It is not a de Polignac number, because 78304087 - 2¹⁹ = 77779799 is a prime.

It is a super-2 number, since 2×78304087² = 12263060081807138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78304067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110089 + ... + 110797.

It is an arithmetic number, because the mean of its divisors is an integer number (9872550).

Almost surely, 2^78304087 is an apocalyptic number.

78304087 is a deficient number, since it is larger than the sum of its proper divisors (676313).

78304087 is a wasteful number, since it uses less digits than its factorization.

78304087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 78304087 is about 8848.9596563664. The cubic root of 78304087 is about 427.8203874849.

The spelling of 78304087 in words is "seventy-eight million, three hundred four thousand, eighty-seven".