428888812 has 12 divisors (see below), whose sum is σ = 818787816. Its totient is φ = 194949440.

The previous prime is 428888791. The next prime is 428888827. The reversal of 428888812 is 218888824.

It is a super-2 number, since 2×428888812² = 367891226117542688, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4873693 + ... + 4873780.

It is an arithmetic number, because the mean of its divisors is an integer number (68232318).

Almost surely, 2^428888812 is an apocalyptic number.

It is an amenable number.

428888812 is a deficient number, since it is larger than the sum of its proper divisors (389899004).

428888812 is a wasteful number, since it uses less digits than its factorization.

428888812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747488 (or 9747486 counting only the distinct ones).

The product of its digits is 524288, while the sum is 49.

The square root of 428888812 is about 20709.6308996563. The cubic root of 428888812 is about 754.1335099790.

The spelling of 428888812 in words is "four hundred twenty-eight million, eight hundred eighty-eight thousand, eight hundred twelve".