71481432 has 32 divisors (see below), whose sum is σ = 194950080. Its totient is φ = 21660960.

The previous prime is 71481419. The next prime is 71481461. The reversal of 71481432 is 23418417.

It is a self number, because there is not a number n which added to its sum of digits gives 71481432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135118 + ... + 135645.

It is an arithmetic number, because the mean of its divisors is an integer number (6092190).

Almost surely, 2^71481432 is an apocalyptic number.

It is an amenable number.

71481432 is an abundant number, since it is smaller than the sum of its proper divisors (123468648).

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

71481432 is a wasteful number, since it uses less digits than its factorization.

71481432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270783 (or 270779 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 71481432 is about 8454.6692424955. The cubic root of 71481432 is about 415.0155933561.

Adding to 71481432 its reverse (23418417), we get a palindrome (94899849).

The spelling of 71481432 in words is "seventy-one million, four hundred eighty-one thousand, four hundred thirty-two".