428900015 has 16 divisors (see below), whose sum is σ = 543957120. Its totient is φ = 323748000.

The previous prime is 428900011. The next prime is 428900027. The reversal of 428900015 is 510009824.

It is not a de Polignac number, because 428900015 - 2² = 428900011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428900011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14852 + ... + 32838.

It is an arithmetic number, because the mean of its divisors is an integer number (33997320).

Almost surely, 2^428900015 is an apocalyptic number.

428900015 is a deficient number, since it is larger than the sum of its proper divisors (115057105).

428900015 is a wasteful number, since it uses less digits than its factorization.

428900015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18262.

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

The square root of 428900015 is about 20709.9013759120. The cubic root of 428900015 is about 754.1400761596.

Adding to 428900015 its reverse (510009824), we get a palindrome (938909839).

The spelling of 428900015 in words is "four hundred twenty-eight million, nine hundred thousand, fifteen".