71528438 has 16 divisors (see below), whose sum is σ = 108428544. Its totient is φ = 35387880.

The previous prime is 71528423. The next prime is 71528441. The reversal of 71528438 is 83482517.

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, 110231 + ... + 110877.

It is an arithmetic number, because the mean of its divisors is an integer number (6776784).

Almost surely, 2^71528438 is an apocalyptic number.

71528438 is a deficient number, since it is larger than the sum of its proper divisors (36900106).

71528438 is a wasteful number, since it uses less digits than its factorization.

71528438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its digits is 53760, while the sum is 38.

The square root of 71528438 is about 8457.4486696639. The cubic root of 71528438 is about 415.1065444736.

The spelling of 71528438 in words is "seventy-one million, five hundred twenty-eight thousand, four hundred thirty-eight".