71547460 has 24 divisors (see below), whose sum is σ = 153916056. Its totient is φ = 27920640.

The previous prime is 71547451. The next prime is 71547461. The reversal of 71547460 is 6474517.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1557504 + 69989956 = 1248^2 + 8366^2 .

It is not an unprimeable number, because it can be changed into a prime (71547461) 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, 42807 + ... + 44446.

It is an arithmetic number, because the mean of its divisors is an integer number (6413169).

Almost surely, 2^71547460 is an apocalyptic number.

It is an amenable number.

71547460 is an abundant number, since it is smaller than the sum of its proper divisors (82368596).

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

71547460 is a wasteful number, since it uses less digits than its factorization.

71547460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87303 (or 87301 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 71547460 is about 8458.5731657295. The cubic root of 71547460 is about 415.1433384959.

The spelling of 71547460 in words is "seventy-one million, five hundred forty-seven thousand, four hundred sixty".