71427432 has 32 divisors (see below), whose sum is σ = 179095680. Its totient is φ = 23738880.

The previous prime is 71427431. The next prime is 71427439. The reversal of 71427432 is 23472417.

It is a super-2 number, since 2×71427432² = 10203756084229248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71427432.

It is not an unprimeable number, because it can be changed into a prime (71427431) 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 7 ways as a sum of consecutive naturals, for example, 4257 + ... + 12687.

It is an arithmetic number, because the mean of its divisors is an integer number (5596740).

Almost surely, 2^71427432 is an apocalyptic number.

It is an amenable number.

71427432 is an abundant number, since it is smaller than the sum of its proper divisors (107668248).

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

71427432 is a wasteful number, since it uses less digits than its factorization.

71427432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8793 (or 8789 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 71427432 is about 8451.4751375130. The cubic root of 71427432 is about 414.9110604392.

Adding to 71427432 its reverse (23472417), we get a palindrome (94899849).

The spelling of 71427432 in words is "seventy-one million, four hundred twenty-seven thousand, four hundred thirty-two".