71734540 has 12 divisors (see below), whose sum is σ = 150642576. Its totient is φ = 28693808.

The previous prime is 71734517. The next prime is 71734571. The reversal of 71734540 is 4543717.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1793344 + ... + 1793383.

It is an arithmetic number, because the mean of its divisors is an integer number (12553548).

Almost surely, 2^71734540 is an apocalyptic number.

It is an amenable number.

71734540 is an abundant number, since it is smaller than the sum of its proper divisors (78908036).

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

71734540 is a wasteful number, since it uses less digits than its factorization.

71734540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586736 (or 3586734 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 71734540 is about 8469.6245489396. The cubic root of 71734540 is about 415.5048580706.

The spelling of 71734540 in words is "seventy-one million, seven hundred thirty-four thousand, five hundred forty".