428299320 has 32 divisors (see below), whose sum is σ = 1284898320. Its totient is φ = 114213120.

The previous prime is 428299303. The next prime is 428299321. The reversal of 428299320 is 23992824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428299321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784461 + ... + 1784700.

Almost surely, 2^428299320 is an apocalyptic number.

428299320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428299320 is an abundant number, since it is smaller than the sum of its proper divisors (856599000).

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

428299320 is a wasteful number, since it uses less digits than its factorization.

428299320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569175 (or 3569171 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 428299320 is about 20695.3936903843. The cubic root of 428299320 is about 753.7878419104.

The spelling of 428299320 in words is "four hundred twenty-eight million, two hundred ninety-nine thousand, three hundred twenty".