78080249 has 16 divisors (see below), whose sum is σ = 86822400. Its totient is φ = 69750720.

The previous prime is 78080213. The next prime is 78080257. The reversal of 78080249 is 94208087.

It is not a de Polignac number, because 78080249 - 2²⁰ = 77031673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78080279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130052 + ... + 130650.

It is an arithmetic number, because the mean of its divisors is an integer number (5426400).

Almost surely, 2^78080249 is an apocalyptic number.

It is an amenable number.

78080249 is a deficient number, since it is larger than the sum of its proper divisors (8742151).

78080249 is a wasteful number, since it uses less digits than its factorization.

78080249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 78080249 is about 8836.3029033641. The cubic root of 78080249 is about 427.4123464032.

The spelling of 78080249 in words is "seventy-eight million, eighty thousand, two hundred forty-nine".