78730279 has 8 divisors (see below), whose sum is σ = 79669008. Its totient is φ = 77795520.

The previous prime is 78730241. The next prime is 78730283. The reversal of 78730279 is 97203787.

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 78730279 - 2¹⁵ = 78697511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78730079) 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, 58939 + ... + 60259.

It is an arithmetic number, because the mean of its divisors is an integer number (9958626).

Almost surely, 2^78730279 is an apocalyptic number.

78730279 is a deficient number, since it is larger than the sum of its proper divisors (938729).

78730279 is a wasteful number, since it uses less digits than its factorization.

78730279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 78730279 is about 8873.0084526050. The cubic root of 78730279 is about 428.5951611038.

The spelling of 78730279 in words is "seventy-eight million, seven hundred thirty thousand, two hundred seventy-nine".