428265907 has 8 divisors (see below), whose sum is σ = 430656512. Its totient is φ = 425881800.

The previous prime is 428265847. The next prime is 428265919. The reversal of 428265907 is 709562824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428265907 - 2²⁷ = 294048179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428265967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186118 + ... + 188404.

It is an arithmetic number, because the mean of its divisors is an integer number (53832064).

Almost surely, 2^428265907 is an apocalyptic number.

428265907 is a deficient number, since it is larger than the sum of its proper divisors (2390605).

428265907 is a wasteful number, since it uses less digits than its factorization.

428265907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 428265907 is about 20694.5864177084. The cubic root of 428265907 is about 753.7682396004.

The spelling of 428265907 in words is "four hundred twenty-eight million, two hundred sixty-five thousand, nine hundred seven".