428802628 has 24 divisors (see below), whose sum is σ = 797409144. Its totient is φ = 201062400.

The previous prime is 428802617. The next prime is 428802631. The reversal of 428802628 is 826208824.

It can be written as a sum of positive squares in 4 ways, for example, as 44328964 + 384473664 = 6658^2 + 19608^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7888 + ... + 30328.

It is an arithmetic number, because the mean of its divisors is an integer number (33225381).

Almost surely, 2^428802628 is an apocalyptic number.

It is an amenable number.

428802628 is a deficient number, since it is larger than the sum of its proper divisors (368606516).

428802628 is a wasteful number, since it uses less digits than its factorization.

428802628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22743 (or 22741 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 428802628 is about 20707.5500240854. The cubic root of 428802628 is about 754.0829929261.

The spelling of 428802628 in words is "four hundred twenty-eight million, eight hundred two thousand, six hundred twenty-eight".