428366475 has 72 divisors (see below), whose sum is σ = 804323520. Its totient is φ = 225983520.

The previous prime is 428366431. The next prime is 428366489. The reversal of 428366475 is 574663824.

428366475 is a `hidden beast` number, since 42 + 83 + 66 + 475 = 666.

It is not a de Polignac number, because 428366475 - 2¹⁷ = 428235403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 428366475.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 649696 + ... + 650354.

It is an arithmetic number, because the mean of its divisors is an integer number (11171160).

Almost surely, 2^428366475 is an apocalyptic number.

428366475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

428366475 is a deficient number, since it is larger than the sum of its proper divisors (375957045).

428366475 is a wasteful number, since it uses less digits than its factorization.

428366475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 774 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 428366475 is about 20697.0160892820. The cubic root of 428366475 is about 753.8272364605.

The spelling of 428366475 in words is "four hundred twenty-eight million, three hundred sixty-six thousand, four hundred seventy-five".