428915 has 8 divisors (see below), whose sum is σ = 520080. Its totient is φ = 339552.

The previous prime is 428899. The next prime is 428951. The reversal of 428915 is 519824.

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 428915 - 2⁴ = 428899 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 152 + ... + 938.

It is an arithmetic number, because the mean of its divisors is an integer number (65010).

2⁴²⁸⁹¹⁵ is an apocalyptic number.

428915 is a deficient number, since it is larger than the sum of its proper divisors (91165).

428915 is a wasteful number, since it uses less digits than its factorization.

428915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901.

The product of its digits is 2880, while the sum is 29.

The square root of 428915 is about 654.9160251513. The cubic root of 428915 is about 75.4148858826.

Subtracting 428915 from its reverse (519824), we obtain a palindrome (90909).

The spelling of 428915 in words is "four hundred twenty-eight thousand, nine hundred fifteen".