71201440 has 48 divisors (see below), whose sum is σ = 178115112. Its totient is φ = 26804224.

The previous prime is 71201411. The next prime is 71201441. The reversal of 71201440 is 4410217.

It can be written as a sum of positive squares in 4 ways, for example, as 71166096 + 35344 = 8436^2 + 188^2 .

It is not an unprimeable number, because it can be changed into a prime (71201441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10369 + ... + 15808.

Almost surely, 2^71201440 is an apocalyptic number.

It is an amenable number.

71201440 is an abundant number, since it is smaller than the sum of its proper divisors (106913672).

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

71201440 is a wasteful number, since it uses less digits than its factorization.

71201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26209 (or 26201 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 71201440 is about 8438.0945716435. The cubic root of 71201440 is about 414.4730137743.

Adding to 71201440 its reverse (4410217), we get a palindrome (75611657).

The spelling of 71201440 in words is "seventy-one million, two hundred one thousand, four hundred forty".