428680725 has 48 divisors (see below), whose sum is σ = 786378240. Its totient is φ = 204299200.

The previous prime is 428680691. The next prime is 428680751. The reversal of 428680725 is 527086824.

It is a happy number.

It is not a de Polignac number, because 428680725 - 2⁶ = 428680661 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 (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44272 + ... + 53078.

It is an arithmetic number, because the mean of its divisors is an integer number (16382880).

Almost surely, 2^428680725 is an apocalyptic number.

It is an amenable number.

428680725 is a deficient number, since it is larger than the sum of its proper divisors (357697515).

428680725 is a wasteful number, since it uses less digits than its factorization.

428680725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890 (or 8885 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 428680725 is about 20704.6063715300. The cubic root of 428680725 is about 754.0115274970.

The spelling of 428680725 in words is "four hundred twenty-eight million, six hundred eighty thousand, seven hundred twenty-five".