71128448 has 16 divisors (see below), whose sum is σ = 141701460. Its totient is φ = 35564160.

The previous prime is 71128433. The next prime is 71128469. The reversal of 71128448 is 84482117.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×71128448² = 10118512229777408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277718 + ... + 277973.

Almost surely, 2^71128448 is an apocalyptic number.

It is an amenable number.

71128448 is a deficient number, since it is larger than the sum of its proper divisors (70573012).

71128448 is an equidigital number, since it uses as much as digits as its factorization.

71128448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555705 (or 555693 counting only the distinct ones).

The product of its digits is 14336, while the sum is 35.

The square root of 71128448 is about 8433.7683155278. The cubic root of 71128448 is about 414.3313333152.

The spelling of 71128448 in words is "seventy-one million, one hundred twenty-eight thousand, four hundred forty-eight".