71440100 has 36 divisors (see below), whose sum is σ = 155393700. Its totient is φ = 28508160.

The previous prime is 71440099. The next prime is 71440111. The reversal of 71440100 is 104417.

It can be written as a sum of positive squares in 6 ways, for example, as 17623204 + 53816896 = 4198^2 + 7336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76436 + ... + 77364.

Almost surely, 2^71440100 is an apocalyptic number.

It is an amenable number.

71440100 is an abundant number, since it is smaller than the sum of its proper divisors (83953600).

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

71440100 is a wasteful number, since it uses less digits than its factorization.

71440100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 71440100 is about 8452.2245592507. The cubic root of 71440100 is about 414.9355878160.

Adding to 71440100 its reverse (104417), we get a palindrome (71544517).

The spelling of 71440100 in words is "seventy-one million, four hundred forty thousand, one hundred".