7897980 has 48 divisors (see below), whose sum is σ = 22296960. Its totient is φ = 2088768.

The previous prime is 7897961. The next prime is 7897987. The reversal of 7897980 is 897987.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 7867 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (464520).

Almost surely, 2^7897980 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 7897980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11148480).

7897980 is an abundant number, since it is smaller than the sum of its proper divisors (14398980).

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

7897980 is a wasteful number, since it uses less digits than its factorization.

7897980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 7897980 is about 2810.3344996637. The cubic root of 7897980 is about 199.1461935932.

The spelling of 7897980 in words is "seven million, eight hundred ninety-seven thousand, nine hundred eighty".