71228079 has 80 divisors (see below), whose sum is σ = 127334592. Its totient is φ = 39232512.

The previous prime is 71228063. The next prime is 71228083. The reversal of 71228079 is 97082217.

It is not a de Polignac number, because 71228079 - 2⁴ = 71228063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71228009) 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 79 ways as a sum of consecutive naturals, for example, 411637 + ... + 411809.

Almost surely, 2^71228079 is an apocalyptic number.

71228079 is a deficient number, since it is larger than the sum of its proper divisors (56106513).

71228079 is a wasteful number, since it uses less digits than its factorization.

71228079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 71228079 is about 8439.6729202025. The cubic root of 71228079 is about 414.5246970452.

It can be divided in two parts, 71 and 228079, that added together give a triangular number (228150 = T₆₇₅).

The spelling of 71228079 in words is "seventy-one million, two hundred twenty-eight thousand, seventy-nine".