7898280 has 128 divisors (see below), whose sum is σ = 26248320. Its totient is φ = 1889280.

The previous prime is 7898263. The next prime is 7898287. The reversal of 7898280 is 828987.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7898287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95119 + ... + 95201.

It is an arithmetic number, because the mean of its divisors is an integer number (205065).

Almost surely, 2^7898280 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 7898280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13124160).

7898280 is an abundant number, since it is smaller than the sum of its proper divisors (18350040).

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

7898280 is a wasteful number, since it uses less digits than its factorization.

7898280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 7898280 is about 2810.3878735861. The cubic root of 7898280 is about 199.1487150439.

The spelling of 7898280 in words is "seven million, eight hundred ninety-eight thousand, two hundred eighty".