71413540 has 48 divisors (see below), whose sum is σ = 167428800. Its totient is φ = 25361280.

The previous prime is 71413523. The next prime is 71413543. The reversal of 71413540 is 4531417.

It is not an unprimeable number, because it can be changed into a prime (71413543) 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 15 ways as a sum of consecutive naturals, for example, 5686 + ... + 13234.

It is an arithmetic number, because the mean of its divisors is an integer number (3488100).

Almost surely, 2^71413540 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 71413540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83714400).

71413540 is an abundant number, since it is smaller than the sum of its proper divisors (96015260).

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

71413540 is a wasteful number, since it uses less digits than its factorization.

71413540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 71413540 is about 8450.6532291889. The cubic root of 71413540 is about 414.8841598587.

Adding to 71413540 its reverse (4531417), we get a palindrome (75944957).

The spelling of 71413540 in words is "seventy-one million, four hundred thirteen thousand, five hundred forty".