71983224 has 48 divisors (see below), whose sum is σ = 196115400. Its totient is φ = 23851584.

The previous prime is 71983217. The next prime is 71983237. The reversal of 71983224 is 42238917.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9567 + ... + 15345.

Almost surely, 2^71983224 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 71983224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98057700).

71983224 is an abundant number, since it is smaller than the sum of its proper divisors (124132176).

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

71983224 is a wasteful number, since it uses less digits than its factorization.

71983224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5964 (or 5957 counting only the distinct ones).

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

The square root of 71983224 is about 8484.2927813696. The cubic root of 71983224 is about 415.9844514652.

The spelling of 71983224 in words is "seventy-one million, nine hundred eighty-three thousand, two hundred twenty-four".