428230725 has 48 divisors (see below), whose sum is σ = 776950272. Its totient is φ = 206818560.

The previous prime is 428230717. The next prime is 428230739. The reversal of 428230725 is 527032824.

It is not a de Polignac number, because 428230725 - 2³ = 428230717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47532 + ... + 55818.

It is an arithmetic number, because the mean of its divisors is an integer number (16186464).

Almost surely, 2^428230725 is an apocalyptic number.

It is an amenable number.

428230725 is a deficient number, since it is larger than the sum of its proper divisors (348719547).

428230725 is a wasteful number, since it uses less digits than its factorization.

428230725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366 (or 8361 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 428230725 is about 20693.7363711825. The cubic root of 428230725 is about 753.7475983741.

The spelling of 428230725 in words is "four hundred twenty-eight million, two hundred thirty thousand, seven hundred twenty-five".