428575775 has 24 divisors (see below), whose sum is σ = 567523200. Its totient is φ = 320342400.

The previous prime is 428575769. The next prime is 428575783. The reversal of 428575775 is 577575824.

It is not a de Polignac number, because 428575775 - 2⁴ = 428575759 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12941 + ... + 32009.

It is an arithmetic number, because the mean of its divisors is an integer number (23646800).

Almost surely, 2^428575775 is an apocalyptic number.

428575775 is a deficient number, since it is larger than the sum of its proper divisors (138947425).

428575775 is a wasteful number, since it uses less digits than its factorization.

428575775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19139 (or 19134 counting only the distinct ones).

The product of its digits is 2744000, while the sum is 50.

The square root of 428575775 is about 20702.0717562277. The cubic root of 428575775 is about 753.9499898817.

The spelling of 428575775 in words is "four hundred twenty-eight million, five hundred seventy-five thousand, seven hundred seventy-five".