71121448 has 16 divisors (see below), whose sum is σ = 133852500. Its totient is φ = 35427456.

The previous prime is 71121443. The next prime is 71121469. The reversal of 71121448 is 84412117.

It can be written as a sum of positive squares in 2 ways, for example, as 46539684 + 24581764 = 6822^2 + 4958^2 .

It is not an unprimeable number, because it can be changed into a prime (71121443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14373 + ... + 18676.

Almost surely, 2^71121448 is an apocalyptic number.

It is an amenable number.

71121448 is a deficient number, since it is larger than the sum of its proper divisors (62731052).

71121448 is a wasteful number, since it uses less digits than its factorization.

71121448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33324 (or 33320 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 71121448 is about 8433.3533069592. The cubic root of 71121448 is about 414.3177409361.

The spelling of 71121448 in words is "seventy-one million, one hundred twenty-one thousand, four hundred forty-eight".