428857810 has 32 divisors (see below), whose sum is σ = 819745920. Its totient is φ = 160979712.

The previous prime is 428857789. The next prime is 428857811. The reversal of 428857810 is 18758824.

It is a super-2 number, since 2×428857810² = 367838042395992200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428857811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57517 + ... + 64543.

It is an arithmetic number, because the mean of its divisors is an integer number (25617060).

Almost surely, 2^428857810 is an apocalyptic number.

428857810 is a deficient number, since it is larger than the sum of its proper divisors (390888110).

428857810 is a wasteful number, since it uses less digits than its factorization.

428857810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7410.

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 428857810 is about 20708.8823937942. The cubic root of 428857810 is about 754.1153388277.

The spelling of 428857810 in words is "four hundred twenty-eight million, eight hundred fifty-seven thousand, eight hundred ten".