71224938 has 12 divisors (see below), whose sum is σ = 154320738. Its totient is φ = 23741640.

The previous prime is 71224931. The next prime is 71224943. The reversal of 71224938 is 83942217.

It can be written as a sum of positive squares in only one way, i.e., 64112049 + 7112889 = 8007^2 + 2667^2 .

It is not an unprimeable number, because it can be changed into a prime (71224931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1978453 + ... + 1978488.

Almost surely, 2^71224938 is an apocalyptic number.

71224938 is an abundant number, since it is smaller than the sum of its proper divisors (83095800).

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

71224938 is a wasteful number, since it uses less digits than its factorization.

71224938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956949 (or 3956946 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 71224938 is about 8439.4868327405. The cubic root of 71224938 is about 414.5186037496.

The spelling of 71224938 in words is "seventy-one million, two hundred twenty-four thousand, nine hundred thirty-eight".