71384652 has 54 divisors (see below), whose sum is σ = 187820724. Its totient is φ = 23707080.

The previous prime is 71384639. The next prime is 71384657. The reversal of 71384652 is 25648317.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (54).

It is a super-2 number, since 2×71384652² = 10191537082322208, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (71384657) 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 17 ways as a sum of consecutive naturals, for example, 263277 + ... + 263547.

Almost surely, 2^71384652 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 71384652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93910362).

71384652 is an abundant number, since it is smaller than the sum of its proper divisors (116436072).

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

71384652 is an equidigital number, since it uses as much as digits as its factorization.

71384652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 276 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 71384652 is about 8448.9438393210. The cubic root of 71384652 is about 414.8282097310.

The spelling of 71384652 in words is "seventy-one million, three hundred eighty-four thousand, six hundred fifty-two".