8428880 has 20 divisors (see below), whose sum is σ = 19597332. Its totient is φ = 3371520.

The previous prime is 8428873. The next prime is 8428891. The reversal of 8428880 is 888248.

It can be written as a sum of positive squares in 2 ways, for example, as 5345344 + 3083536 = 2312^2 + 1756^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52601 + ... + 52760.

Almost surely, 2^8428880 is an apocalyptic number.

8428880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8428880 is an abundant number, since it is smaller than the sum of its proper divisors (11168452).

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

8428880 is a wasteful number, since it uses less digits than its factorization.

8428880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105374 (or 105368 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 8428880 is about 2903.2533475396. The cubic root of 8428880 is about 203.5119693853.

Adding to 8428880 its product of nonzero digits (32768), we get a palindrome (8461648).

The spelling of 8428880 in words is "eight million, four hundred twenty-eight thousand, eight hundred eighty".