71702740 has 12 divisors (see below), whose sum is σ = 150575796. Its totient is φ = 28681088.

The previous prime is 71702731. The next prime is 71702747. The reversal of 71702740 is 4720717.

It can be written as a sum of positive squares in 2 ways, for example, as 24423364 + 47279376 = 4942^2 + 6876^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71702699 and 71702708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71702747) 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, 1792549 + ... + 1792588.

It is an arithmetic number, because the mean of its divisors is an integer number (12547983).

Almost surely, 2^71702740 is an apocalyptic number.

It is an amenable number.

71702740 is an abundant number, since it is smaller than the sum of its proper divisors (78873056).

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

71702740 is a wasteful number, since it uses less digits than its factorization.

71702740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585146 (or 3585144 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 71702740 is about 8467.7470439309. The cubic root of 71702740 is about 415.4434510765.

The spelling of 71702740 in words is "seventy-one million, seven hundred two thousand, seven hundred forty".