7998480 has 240 divisors, whose sum is σ = 32914560. Its totient is φ = 1748736.

The previous prime is 7998451. The next prime is 7998481. The reversal of 7998480 is 848997.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (7998481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 347749 + ... + 347771.

It is an arithmetic number, because the mean of its divisors is an integer number (137144).

Almost surely, 2^7998480 is an apocalyptic number.

7998480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7998480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16457280).

7998480 is an abundant number, since it is smaller than the sum of its proper divisors (24916080).

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

7998480 is a wasteful number, since it uses less digits than its factorization.

7998480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 7998480 is about 2828.1584114048. The cubic root of 7998480 is about 199.9873325310.

The spelling of 7998480 in words is "seven million, nine hundred ninety-eight thousand, four hundred eighty".