78360249 has 8 divisors (see below), whose sum is σ = 113978592. Its totient is φ = 47491040.

The previous prime is 78360229. The next prime is 78360263. The reversal of 78360249 is 94206387.

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 78360249 - 2⁸ = 78359993 is a prime.

It is a super-2 number, since 2×78360249² = 12280657246684002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78360229) 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, 1187244 + ... + 1187309.

It is an arithmetic number, because the mean of its divisors is an integer number (14247324).

Almost surely, 2^78360249 is an apocalyptic number.

It is an amenable number.

78360249 is a deficient number, since it is larger than the sum of its proper divisors (35618343).

78360249 is a wasteful number, since it uses less digits than its factorization.

78360249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374567.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 78360249 is about 8852.1324549512. The cubic root of 78360249 is about 427.9226448402.

The spelling of 78360249 in words is "seventy-eight million, three hundred sixty thousand, two hundred forty-nine".