71224832 has 120 divisors (see below), whose sum is σ = 176332464. Its totient is φ = 28557312.

The previous prime is 71224823. The next prime is 71224837. The reversal of 71224832 is 23842217.

It is a junction number, because it is equal to n+sod(n) for n = 71224795 and 71224804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71224837) 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 in 11 ways as a sum of consecutive naturals, for example, 426413 + ... + 426579.

Almost surely, 2^71224832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71224832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88166232).

71224832 is an abundant number, since it is smaller than the sum of its proper divisors (105107632).

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

71224832 is a wasteful number, since it uses less digits than its factorization.

71224832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 193 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 71224832 is about 8439.4805527355. The cubic root of 71224832 is about 414.5183981147.

The spelling of 71224832 in words is "seventy-one million, two hundred twenty-four thousand, eight hundred thirty-two".