71474440 has 16 divisors (see below), whose sum is σ = 160817580. Its totient is φ = 28589760.

The previous prime is 71474411. The next prime is 71474441. The reversal of 71474440 is 4447417.

It can be written as a sum of positive squares in 2 ways, for example, as 70660836 + 813604 = 8406^2 + 902^2 .

It is not an unprimeable number, because it can be changed into a prime (71474441) 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, 893391 + ... + 893470.

Almost surely, 2^71474440 is an apocalyptic number.

It is an amenable number.

71474440 is an abundant number, since it is smaller than the sum of its proper divisors (89343140).

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

71474440 is a wasteful number, since it uses less digits than its factorization.

71474440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786872 (or 1786868 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 71474440 is about 8454.2557330613. The cubic root of 71474440 is about 415.0020612468.

The spelling of 71474440 in words is "seventy-one million, four hundred seventy-four thousand, four hundred forty".