71146432 has 70 divisors (see below), whose sum is σ = 165057328. Its totient is φ = 30425472.

The previous prime is 71146421. The next prime is 71146433. The reversal of 71146432 is 23464117.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 71146432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71146433) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 153433 + ... + 153895.

Almost surely, 2^71146432 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 71146432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82528664).

71146432 is an abundant number, since it is smaller than the sum of its proper divisors (93910896).

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

71146432 is an frugal number, since it uses more digits than its factorization.

71146432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 472 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 71146432 is about 8434.8344382092. The cubic root of 71146432 is about 414.3662499906.

The spelling of 71146432 in words is "seventy-one million, one hundred forty-six thousand, four hundred thirty-two".