428087875 has 8 divisors (see below), whose sum is σ = 534253824. Its totient is φ = 342470200.

The previous prime is 428087867. The next prime is 428087899. The reversal of 428087875 is 578780824.

It is not a de Polignac number, because 428087875 - 2³ = 428087867 is a prime.

It is a Duffinian number.

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, 1712227 + ... + 1712476.

It is an arithmetic number, because the mean of its divisors is an integer number (66781728).

Almost surely, 2^428087875 is an apocalyptic number.

428087875 is a deficient number, since it is larger than the sum of its proper divisors (106165949).

428087875 is an equidigital number, since it uses as much as digits as its factorization.

428087875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424718 (or 3424708 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 428087875 is about 20690.2845558006. The cubic root of 428087875 is about 753.6637768787.

The spelling of 428087875 in words is "four hundred twenty-eight million, eighty-seven thousand, eight hundred seventy-five".