71037140 has 24 divisors (see below), whose sum is σ = 149339400. Its totient is φ = 28384128.

The previous prime is 71037139. The next prime is 71037157. The reversal of 71037140 is 4173017.

It can be written as a sum of positive squares in 4 ways, for example, as 1214404 + 69822736 = 1102^2 + 8356^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29834 + ... + 32126.

It is an arithmetic number, because the mean of its divisors is an integer number (6222475).

Almost surely, 2^71037140 is an apocalyptic number.

It is an amenable number.

71037140 is an abundant number, since it is smaller than the sum of its proper divisors (78302260).

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

71037140 is a wasteful number, since it uses less digits than its factorization.

71037140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851 (or 3849 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 71037140 is about 8428.3533385828. The cubic root of 71037140 is about 414.1539642208.

The spelling of 71037140 in words is "seventy-one million, thirty-seven thousand, one hundred forty".