71225838 has 16 divisors (see below), whose sum is σ = 158279760. Its totient is φ = 23741928.

The previous prime is 71225837. The next prime is 71225867. The reversal of 71225838 is 83852217.

71225838 is a `hidden beast` number, since 71 + 2 + 2 + 583 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71225831) 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, 659445 + ... + 659552.

It is an arithmetic number, because the mean of its divisors is an integer number (9892485).

Almost surely, 2^71225838 is an apocalyptic number.

71225838 is an abundant number, since it is smaller than the sum of its proper divisors (87053922).

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

71225838 is a wasteful number, since it uses less digits than its factorization.

71225838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319008 (or 1319002 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 71225838 is about 8439.5401533496. The cubic root of 71225838 is about 414.5203496979.

The spelling of 71225838 in words is "seventy-one million, two hundred twenty-five thousand, eight hundred thirty-eight".