71140228 has 6 divisors (see below), whose sum is σ = 124495406. Its totient is φ = 35570112.

The previous prime is 71140183. The next prime is 71140229. The reversal of 71140228 is 82204117.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69522244 + 1617984 = 8338^2 + 1272^2 .

It is not an unprimeable number, because it can be changed into a prime (71140229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8892525 + ... + 8892532.

Almost surely, 2^71140228 is an apocalyptic number.

It is an amenable number.

71140228 is a deficient number, since it is larger than the sum of its proper divisors (53355178).

71140228 is a wasteful number, since it uses less digits than its factorization.

71140228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17785061 (or 17785059 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 71140228 is about 8434.4666695648. The cubic root of 71140228 is about 414.3542053344.

The spelling of 71140228 in words is "seventy-one million, one hundred forty thousand, two hundred twenty-eight".