428780208 has 20 divisors (see below), whose sum is σ = 1107682328. Its totient is φ = 142926720.

The previous prime is 428780197. The next prime is 428780213. The reversal of 428780208 is 802087824.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 4466413 + ... + 4466508.

Almost surely, 2^428780208 is an apocalyptic number.

428780208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428780208 is an abundant number, since it is smaller than the sum of its proper divisors (678902120).

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

428780208 is a wasteful number, since it uses less digits than its factorization.

428780208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8932932 (or 8932926 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 428780208 is about 20707.0086685644. The cubic root of 428780208 is about 754.0698502553.

The spelling of 428780208 in words is "four hundred twenty-eight million, seven hundred eighty thousand, two hundred eight".