71303504 has 40 divisors (see below), whose sum is σ = 147312000. Its totient is φ = 33336576.

The previous prime is 71303483. The next prime is 71303521. The reversal of 71303504 is 40530317.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71303504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22532 + ... + 25500.

It is an arithmetic number, because the mean of its divisors is an integer number (3682800).

Almost surely, 2^71303504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71303504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73656000).

71303504 is an abundant number, since it is smaller than the sum of its proper divisors (76008496).

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

71303504 is a wasteful number, since it uses less digits than its factorization.

71303504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075 (or 3069 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 71303504 is about 8444.1402167420. The cubic root of 71303504 is about 414.6709619091.

The spelling of 71303504 in words is "seventy-one million, three hundred three thousand, five hundred four".