7897988 has 12 divisors (see below), whose sum is σ = 15796032. Its totient is φ = 3384840.

The previous prime is 7897987. The next prime is 7897999. The reversal of 7897988 is 8897987.

7897988 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

7897988 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7897987) 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, 141008 + ... + 141063.

It is an arithmetic number, because the mean of its divisors is an integer number (1316336).

Almost surely, 2^7897988 is an apocalyptic number.

It is an amenable number.

7897988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7897988 is a wasteful number, since it uses less digits than its factorization.

7897988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282082 (or 282080 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 56.

The square root of 7897988 is about 2810.3359229815. The cubic root of 7897988 is about 199.1462608327.

Subtracting 7897988 from its reverse (8897987), we obtain a palindrome (999999).

The spelling of 7897988 in words is "seven million, eight hundred ninety-seven thousand, nine hundred eighty-eight".