71084740 has 12 divisors (see below), whose sum is σ = 149277996. Its totient is φ = 28433888.

The previous prime is 71084737. The next prime is 71084747. The reversal of 71084740 is 4748017.

It can be written as a sum of positive squares in 2 ways, for example, as 40525956 + 30558784 = 6366^2 + 5528^2 .

It is not an unprimeable number, because it can be changed into a prime (71084747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1777099 + ... + 1777138.

It is an arithmetic number, because the mean of its divisors is an integer number (12439833).

Almost surely, 2^71084740 is an apocalyptic number.

It is an amenable number.

71084740 is an abundant number, since it is smaller than the sum of its proper divisors (78193256).

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

71084740 is a wasteful number, since it uses less digits than its factorization.

71084740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554246 (or 3554244 counting only the distinct ones).

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

The square root of 71084740 is about 8431.1766675832. The cubic root of 71084740 is about 414.2464478950.

It can be divided in two parts, 71084 and 740, that added together give a square (71824 = 268²).

The spelling of 71084740 in words is "seventy-one million, eighty-four thousand, seven hundred forty".