428380108 has 24 divisors (see below), whose sum is σ = 809958240. Its totient is φ = 197070720.

The previous prime is 428380097. The next prime is 428380109. The reversal of 428380108 is 801083824.

It is not an unprimeable number, because it can be changed into a prime (428380109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2928 + ... + 29416.

It is an arithmetic number, because the mean of its divisors is an integer number (33748260).

Almost surely, 2^428380108 is an apocalyptic number.

It is an amenable number.

428380108 is a deficient number, since it is larger than the sum of its proper divisors (381578132).

428380108 is a wasteful number, since it uses less digits than its factorization.

428380108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26817 (or 26815 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 428380108 is about 20697.3454336540. The cubic root of 428380108 is about 753.8352333652.

The spelling of 428380108 in words is "four hundred twenty-eight million, three hundred eighty thousand, one hundred eight".