71428532 has 24 divisors (see below), whose sum is σ = 145899264. Its totient is φ = 29960352.

The previous prime is 71428531. The next prime is 71428541. The reversal of 71428532 is 23582417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428531) 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, 25823 + ... + 28454.

It is an arithmetic number, because the mean of its divisors is an integer number (6079136).

Almost surely, 2^71428532 is an apocalyptic number.

It is an amenable number.

71428532 is an abundant number, since it is smaller than the sum of its proper divisors (74470732).

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

71428532 is a wasteful number, since it uses less digits than its factorization.

71428532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54335 (or 54333 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 71428532 is about 8451.5402146591. The cubic root of 71428532 is about 414.9131903391.

The spelling of 71428532 in words is "seventy-one million, four hundred twenty-eight thousand, five hundred thirty-two".