8380428 has 24 divisors (see below), whose sum is σ = 22348032. Its totient is φ = 2394384.

The previous prime is 8380417. The next prime is 8380451. The reversal of 8380428 is 8240838.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49800 + ... + 49967.

It is an arithmetic number, because the mean of its divisors is an integer number (931168).

Almost surely, 2^8380428 is an apocalyptic number.

It is an amenable number.

8380428 is an abundant number, since it is smaller than the sum of its proper divisors (13967604).

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

8380428 is a wasteful number, since it uses less digits than its factorization.

8380428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99781 (or 99779 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 8380428 is about 2894.8968893555. The cubic root of 8380428 is about 203.1212683496.

The spelling of 8380428 in words is "eight million, three hundred eighty thousand, four hundred twenty-eight".