7987748 has 6 divisors (see below), whose sum is σ = 13978566. Its totient is φ = 3993872.

The previous prime is 7987729. The next prime is 7987751. The reversal of 7987748 is 8477897.

It can be written as a sum of positive squares in only one way, i.e., 5579044 + 2408704 = 2362^2 + 1552^2 .

It is a super-2 number, since 2×7987748² = 127608236223008, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7² + 9⁴ + 8³ + 7⁶ + 7⁸ + 4⁵ + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 7987696 and 7987705.

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, 998465 + ... + 998472.

It is an arithmetic number, because the mean of its divisors is an integer number (2329761).

Almost surely, 2^7987748 is an apocalyptic number.

It is an amenable number.

7987748 is a deficient number, since it is larger than the sum of its proper divisors (5990818).

7987748 is a wasteful number, since it uses less digits than its factorization.

7987748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996941 (or 1996939 counting only the distinct ones).

The product of its digits is 790272, while the sum is 50.

The square root of 7987748 is about 2826.2604267831. The cubic root of 7987748 is about 199.8978478336.

The spelling of 7987748 in words is "seven million, nine hundred eighty-seven thousand, seven hundred forty-eight".