428239712 has 12 divisors (see below), whose sum is σ = 843096996. Its totient is φ = 214119840.

The previous prime is 428239687. The next prime is 428239729. The reversal of 428239712 is 217932824.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 6691214 + ... + 6691277.

It is an arithmetic number, because the mean of its divisors is an integer number (70258083).

Almost surely, 2^428239712 is an apocalyptic number.

It is an amenable number.

428239712 is a deficient number, since it is larger than the sum of its proper divisors (414857284).

428239712 is a wasteful number, since it uses less digits than its factorization.

428239712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382501 (or 13382493 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 428239712 is about 20693.9535130434. The cubic root of 428239712 is about 753.7528711410.

The spelling of 428239712 in words is "four hundred twenty-eight million, two hundred thirty-nine thousand, seven hundred twelve".