71432544 has 48 divisors (see below), whose sum is σ = 190097712. Its totient is φ = 23482368.

The previous prime is 71432531. The next prime is 71432561. The reversal of 71432544 is 44523417.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1912 + ... + 12104.

It is an arithmetic number, because the mean of its divisors is an integer number (3960369).

Almost surely, 2^71432544 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 71432544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95048856).

71432544 is an abundant number, since it is smaller than the sum of its proper divisors (118665168).

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

71432544 is a wasteful number, since it uses less digits than its factorization.

71432544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10279 (or 10271 counting only the distinct ones).

The product of its digits is 13440, while the sum is 30.

The square root of 71432544 is about 8451.7775645127. Note that the first 3 decimals coincide. The cubic root of 71432544 is about 414.9209584793.

The spelling of 71432544 in words is "seventy-one million, four hundred thirty-two thousand, five hundred forty-four".