71542080 has 84 divisors (see below), whose sum is σ = 246084852. Its totient is φ = 19077120.

The previous prime is 71542073. The next prime is 71542091. The reversal of 71542080 is 8024517.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 57881664 = 3696^2 + 7608^2 .

It is a congruent number.

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, 9541 + ... + 15300.

Almost surely, 2^71542080 is an apocalyptic number.

It is an amenable number.

71542080 is an abundant number, since it is smaller than the sum of its proper divisors (174542772).

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

71542080 is a wasteful number, since it uses less digits than its factorization.

71542080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24864 (or 24851 counting only the distinct ones).

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

The square root of 71542080 is about 8458.2551392116. The cubic root of 71542080 is about 415.1329326891.

Adding to 71542080 its reverse (8024517), we get a palindrome (79566597).

The spelling of 71542080 in words is "seventy-one million, five hundred forty-two thousand, eighty".