71528895 has 24 divisors (see below), whose sum is σ = 124180992. Its totient is φ = 38088000.

The previous prime is 71528893. The next prime is 71528917. The reversal of 71528895 is 59882517.

It is a happy number.

It is not a de Polignac number, because 71528895 - 2¹ = 71528893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 71528895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71528893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51105 + ... + 52485.

It is an arithmetic number, because the mean of its divisors is an integer number (5174208).

Almost surely, 2^71528895 is an apocalyptic number.

71528895 is a deficient number, since it is larger than the sum of its proper divisors (52652097).

71528895 is a wasteful number, since it uses less digits than its factorization.

71528895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543 (or 2540 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 71528895 is about 8457.4756872249. The cubic root of 71528895 is about 415.1074285196.

The spelling of 71528895 in words is "seventy-one million, five hundred twenty-eight thousand, eight hundred ninety-five".