71302740 has 48 divisors (see below), whose sum is σ = 202638912. Its totient is φ = 18729216.

The previous prime is 71302733. The next prime is 71302741. The reversal of 71302740 is 4720317.

It is a self number, because there is not a number n which added to its sum of digits gives 71302740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71302741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4849 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (4221644).

Almost surely, 2^71302740 is an apocalyptic number.

It is an amenable number.

71302740 is an abundant number, since it is smaller than the sum of its proper divisors (131336172).

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

71302740 is a wasteful number, since it uses less digits than its factorization.

71302740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17816 (or 17814 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 71302740 is about 8444.0949781489. The cubic root of 71302740 is about 414.6694808704.

It can be divided in two parts, 7130 and 2740, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 71302740 in words is "seventy-one million, three hundred two thousand, seven hundred forty".