71427528 has 32 divisors (see below), whose sum is σ = 198410400. Its totient is φ = 23809104.

The previous prime is 71427527. The next prime is 71427547. The reversal of 71427528 is 82572417.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 71427492 and 71427501.

It is not an unprimeable number, because it can be changed into a prime (71427527) 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, 165126 + ... + 165557.

It is an arithmetic number, because the mean of its divisors is an integer number (6200325).

Almost surely, 2^71427528 is an apocalyptic number.

It is an amenable number.

71427528 is an abundant number, since it is smaller than the sum of its proper divisors (126982872).

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

71427528 is a wasteful number, since it uses less digits than its factorization.

71427528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330698 (or 330688 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 71427528 is about 8451.4808169930. The cubic root of 71427528 is about 414.9112463223.

The spelling of 71427528 in words is "seventy-one million, four hundred twenty-seven thousand, five hundred twenty-eight".