71428227 has 8 divisors (see below), whose sum is σ = 102563664. Its totient is φ = 43955808.

The previous prime is 71428213. The next prime is 71428243. The reversal of 71428227 is 72282417.

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

It is not a de Polignac number, because 71428227 - 2⁷ = 71428099 is a prime.

It is a super-2 number, since 2×71428227² = 10203983224727058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71428207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915708 + ... + 915785.

It is an arithmetic number, because the mean of its divisors is an integer number (12820458).

Almost surely, 2^71428227 is an apocalyptic number.

71428227 is a deficient number, since it is larger than the sum of its proper divisors (31135437).

71428227 is a wasteful number, since it uses less digits than its factorization.

71428227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831509.

The product of its digits is 12544, while the sum is 33.

The square root of 71428227 is about 8451.5221705915. The cubic root of 71428227 is about 414.9125997781.

The spelling of 71428227 in words is "seventy-one million, four hundred twenty-eight thousand, two hundred twenty-seven".