79278073 has 16 divisors (see below), whose sum is σ = 92494080. Its totient is φ = 66548736.

The previous prime is 79278053. The next prime is 79278077. The reversal of 79278073 is 37087297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79278073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79278077) 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, 84873 + ... + 85801.

It is an arithmetic number, because the mean of its divisors is an integer number (5780880).

Almost surely, 2^79278073 is an apocalyptic number.

79278073 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

79278073 is a deficient number, since it is larger than the sum of its proper divisors (13216007).

79278073 is a wasteful number, since it uses less digits than its factorization.

79278073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

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

The square root of 79278073 is about 8903.8235045401. The cubic root of 79278073 is about 429.5868990967.

It can be divided in two parts, 792 and 78073, that multiplied together give a palindrome (61833816).

The spelling of 79278073 in words is "seventy-nine million, two hundred seventy-eight thousand, seventy-three".