428874806 has 4 divisors (see below), whose sum is σ = 643312212. Its totient is φ = 214437402.

The previous prime is 428874773. The next prime is 428874829. The reversal of 428874806 is 608478824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107218700 + ... + 107218703.

It is an arithmetic number, because the mean of its divisors is an integer number (160828053).

Almost surely, 2^428874806 is an apocalyptic number.

428874806 is a deficient number, since it is larger than the sum of its proper divisors (214437406).

428874806 is a wasteful number, since it uses less digits than its factorization.

428874806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214437405.

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 428874806 is about 20709.2927450456. The cubic root of 428874806 is about 754.1253007737.

The spelling of 428874806 in words is "four hundred twenty-eight million, eight hundred seventy-four thousand, eight hundred six".