7991488 has 56 divisors (see below), whose sum is σ = 17007840. Its totient is φ = 3717120.

The previous prime is 7991483. The next prime is 7991531. The reversal of 7991488 is 8841997.

It is a happy number.

7991488 is nontrivially palindromic in base 6.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (7991483) 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 in 7 ways as a sum of consecutive naturals, for example, 89748 + ... + 89836.

Almost surely, 2^7991488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7991488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8503920).

7991488 is an abundant number, since it is smaller than the sum of its proper divisors (9016352).

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

7991488 is a wasteful number, since it uses less digits than its factorization.

7991488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 175 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 7991488 is about 2826.9220010464. The cubic root of 7991488 is about 199.9290414941.

The spelling of 7991488 in words is "seven million, nine hundred ninety-one thousand, four hundred eighty-eight".