7891148 has 6 divisors (see below), whose sum is σ = 13809516. Its totient is φ = 3945572.

The previous prime is 7891141. The next prime is 7891151. The reversal of 7891148 is 8411987.

It is not an unprimeable number, because it can be changed into a prime (7891141) by changing a digit.

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, 986390 + ... + 986397.

It is an arithmetic number, because the mean of its divisors is an integer number (2301586).

Almost surely, 2^7891148 is an apocalyptic number.

It is an amenable number.

7891148 is a deficient number, since it is larger than the sum of its proper divisors (5918368).

7891148 is a wasteful number, since it uses less digits than its factorization.

7891148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972791 (or 1972789 counting only the distinct ones).

The product of its digits is 16128, while the sum is 38.

The square root of 7891148 is about 2809.1187230162. The cubic root of 7891148 is about 199.0887544634.

The spelling of 7891148 in words is "seven million, eight hundred ninety-one thousand, one hundred forty-eight".