71480740 has 12 divisors (see below), whose sum is σ = 150109596. Its totient is φ = 28592288.

The previous prime is 71480719. The next prime is 71480743. The reversal of 71480740 is 4708417.

It can be written as a sum of positive squares in 2 ways, for example, as 43665664 + 27815076 = 6608^2 + 5274^2 .

It is not an unprimeable number, because it can be changed into a prime (71480743) 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 3 ways as a sum of consecutive naturals, for example, 1786999 + ... + 1787038.

It is an arithmetic number, because the mean of its divisors is an integer number (12509133).

Almost surely, 2^71480740 is an apocalyptic number.

It is an amenable number.

71480740 is an abundant number, since it is smaller than the sum of its proper divisors (78628856).

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

71480740 is a wasteful number, since it uses less digits than its factorization.

71480740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574046 (or 3574044 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 71480740 is about 8454.6283182645. The cubic root of 71480740 is about 415.0142541192.

The spelling of 71480740 in words is "seventy-one million, four hundred eighty thousand, seven hundred forty".