71249212 has 24 divisors (see below), whose sum is σ = 126460656. Its totient is φ = 35121408.

The previous prime is 71249209. The next prime is 71249219. The reversal of 71249212 is 21294217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71249219) 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, 127638 + ... + 128194.

It is an arithmetic number, because the mean of its divisors is an integer number (5269194).

Almost surely, 2^71249212 is an apocalyptic number.

It is an amenable number.

71249212 is a deficient number, since it is larger than the sum of its proper divisors (55211444).

71249212 is a wasteful number, since it uses less digits than its factorization.

71249212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 955 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 71249212 is about 8440.9248308464. The cubic root of 71249212 is about 414.5656887642.

The spelling of 71249212 in words is "seventy-one million, two hundred forty-nine thousand, two hundred twelve".