71254080 has 140 divisors (see below), whose sum is σ = 253555500. Its totient is φ = 18994176.

The previous prime is 71254033. The next prime is 71254093. The reversal of 71254080 is 8045217.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 54997056 = 4032^2 + 7416^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24546 + ... + 27294.

Almost surely, 2^71254080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71254080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126777750).

71254080 is an abundant number, since it is smaller than the sum of its proper divisors (182301420).

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

71254080 is a wasteful number, since it uses less digits than its factorization.

71254080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 71254080 is about 8441.2131829495. The cubic root of 71254080 is about 414.5751300841.

Adding to 71254080 its reverse (8045217), we get a palindrome (79299297).

The spelling of 71254080 in words is "seventy-one million, two hundred fifty-four thousand, eighty".