71225824 has 48 divisors (see below), whose sum is σ = 143942400. Its totient is φ = 34683264.

The previous prime is 71225809. The next prime is 71225831. The reversal of 71225824 is 42852217.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297897 + ... + 298135.

It is an arithmetic number, because the mean of its divisors is an integer number (2998800).

Almost surely, 2^71225824 is an apocalyptic number.

It is an amenable number.

71225824 is an abundant number, since it is smaller than the sum of its proper divisors (72716576).

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

71225824 is a wasteful number, since it uses less digits than its factorization.

71225824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 447 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 71225824 is about 8439.5393239205. The cubic root of 71225824 is about 414.5203225388.

The spelling of 71225824 in words is "seventy-one million, two hundred twenty-five thousand, eight hundred twenty-four".