71383424 has 32 divisors (see below), whose sum is σ = 162526800. Its totient is φ = 30592512.

The previous prime is 71383423. The next prime is 71383427. The reversal of 71383424 is 42438317.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71383423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38939 + ... + 40730.

Almost surely, 2^71383424 is an apocalyptic number.

It is an amenable number.

71383424 is an abundant number, since it is smaller than the sum of its proper divisors (91143376).

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

71383424 is an equidigital number, since it uses as much as digits as its factorization.

71383424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79690 (or 79678 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 71383424 is about 8448.8711672033. The cubic root of 71383424 is about 414.8258310126.

The spelling of 71383424 in words is "seventy-one million, three hundred eighty-three thousand, four hundred twenty-four".