71128206 has 20 divisors (see below), whose sum is σ = 159380232. Its totient is φ = 23709348.

The previous prime is 71128193. The next prime is 71128219. The reversal of 71128206 is 60282117.

It is an interprime number because it is at equal distance from previous prime (71128193) and next prime (71128219).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 71128206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 219370 + ... + 219693.

Almost surely, 2^71128206 is an apocalyptic number.

71128206 is an abundant number, since it is smaller than the sum of its proper divisors (88252026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71128206 is a wasteful number, since it uses less digits than its factorization.

71128206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439077 (or 439068 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 71128206 is about 8433.7539684295. The cubic root of 71128206 is about 414.3308634221.

The spelling of 71128206 in words is "seventy-one million, one hundred twenty-eight thousand, two hundred six".