71432560 has 40 divisors (see below), whose sum is σ = 167712480. Its totient is φ = 28292352.

The previous prime is 71432531. The next prime is 71432561. The reversal of 71432560 is 6523417.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×71432560² = 10205221256307200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71432561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3906 + ... + 12574.

It is an arithmetic number, because the mean of its divisors is an integer number (4192812).

Almost surely, 2^71432560 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 71432560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83856240).

71432560 is an abundant number, since it is smaller than the sum of its proper divisors (96279920).

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

71432560 is a wasteful number, since it uses less digits than its factorization.

71432560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785 (or 8779 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 71432560 is about 8451.7785110591. The cubic root of 71432560 is about 414.9209894583.

Adding to 71432560 its reverse (6523417), we get a palindrome (77955977).

The spelling of 71432560 in words is "seventy-one million, four hundred thirty-two thousand, five hundred sixty".