71228285 has 8 divisors (see below), whose sum is σ = 85790976. Its totient is φ = 56771280.

The previous prime is 71228257. The next prime is 71228291. The reversal of 71228285 is 58282217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71228285 - 2¹⁸ = 70966141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24929 + ... + 27638.

It is an arithmetic number, because the mean of its divisors is an integer number (10723872).

Almost surely, 2^71228285 is an apocalyptic number.

It is an amenable number.

71228285 is a deficient number, since it is larger than the sum of its proper divisors (14562691).

71228285 is a wasteful number, since it uses less digits than its factorization.

71228285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52843.

The product of its digits is 17920, while the sum is 35.

The square root of 71228285 is about 8439.6851244581. The cubic root of 71228285 is about 414.5250966629.

The spelling of 71228285 in words is "seventy-one million, two hundred twenty-eight thousand, two hundred eighty-five".