78481273 has 8 divisors (see below), whose sum is σ = 84587328. Its totient is φ = 72385104.

The previous prime is 78481261. The next prime is 78481283. The reversal of 78481273 is 37218487.

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 78481273 - 2⁵ = 78481241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78481283) 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, 28140 + ... + 30802.

It is an arithmetic number, because the mean of its divisors is an integer number (10573416).

Almost surely, 2^78481273 is an apocalyptic number.

It is an amenable number.

78481273 is a deficient number, since it is larger than the sum of its proper divisors (6106055).

78481273 is a wasteful number, since it uses less digits than its factorization.

78481273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943.

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

The square root of 78481273 is about 8858.9656845481. The cubic root of 78481273 is about 428.1428341657.

The spelling of 78481273 in words is "seventy-eight million, four hundred eighty-one thousand, two hundred seventy-three".