8480640 has 128 divisors (see below), whose sum is σ = 30942720. Its totient is φ = 1935360.

The previous prime is 8480623. The next prime is 8480651. The reversal of 8480640 is 460848.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8480598 and 8480607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13125 + ... + 13755.

It is an arithmetic number, because the mean of its divisors is an integer number (241740).

Almost surely, 2^8480640 is an apocalyptic number.

8480640 is a gapful number since it is divisible by the number (80) 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 8480640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15471360).

8480640 is an abundant number, since it is smaller than the sum of its proper divisors (22462080).

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

8480640 is a wasteful number, since it uses less digits than its factorization.

8480640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 8480640 is about 2912.1538420901. The cubic root of 8480640 is about 203.9276944828.

The spelling of 8480640 in words is "eight million, four hundred eighty thousand, six hundred forty".