78872275 has 12 divisors (see below), whose sum is σ = 97922304. Its totient is φ = 63020000.

The previous prime is 78872239. The next prime is 78872279. The reversal of 78872275 is 57227887.

It is not a de Polignac number, because 78872275 - 2⁹ = 78871763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78872279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27405 + ... + 30145.

It is an arithmetic number, because the mean of its divisors is an integer number (8160192).

Almost surely, 2^78872275 is an apocalyptic number.

78872275 is a deficient number, since it is larger than the sum of its proper divisors (19050029).

78872275 is a wasteful number, since it uses less digits than its factorization.

78872275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902 (or 3897 counting only the distinct ones).

The product of its digits is 439040, while the sum is 46.

The square root of 78872275 is about 8881.0064181938. The cubic root of 78872275 is about 428.8526742574.

The spelling of 78872275 in words is "seventy-eight million, eight hundred seventy-two thousand, two hundred seventy-five".