7881448 has 8 divisors (see below), whose sum is σ = 14777730. Its totient is φ = 3940720.

The previous prime is 7881373. The next prime is 7881487. The reversal of 7881448 is 8441887.

It can be written as a sum of positive squares in only one way, i.e., 7300804 + 580644 = 2702^2 + 762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 7881448.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492583 + ... + 492598.

Almost surely, 2^7881448 is an apocalyptic number.

It is an amenable number.

7881448 is a deficient number, since it is larger than the sum of its proper divisors (6896282).

7881448 is a wasteful number, since it uses less digits than its factorization.

7881448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985187 (or 985183 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The square root of 7881448 is about 2807.3916719973. The cubic root of 7881448 is about 199.0071460276.

The spelling of 7881448 in words is "seven million, eight hundred eighty-one thousand, four hundred forty-eight".