428487267 has 32 divisors (see below), whose sum is σ = 638668800. Its totient is φ = 253717632.

The previous prime is 428487253. The next prime is 428487271. The reversal of 428487267 is 762784824.

It is a happy number.

It is not a de Polignac number, because 428487267 - 2⁸ = 428487011 is a prime.

It is a super-2 number, since 2×428487267² = 367202675962258578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428487247) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 496078 + ... + 496940.

It is an arithmetic number, because the mean of its divisors is an integer number (19958400).

Almost surely, 2^428487267 is an apocalyptic number.

428487267 is a deficient number, since it is larger than the sum of its proper divisors (210181533).

428487267 is a wasteful number, since it uses less digits than its factorization.

428487267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its digits is 1204224, while the sum is 48.

The square root of 428487267 is about 20699.9339854020. The cubic root of 428487267 is about 753.8980852527.

The spelling of 428487267 in words is "four hundred twenty-eight million, four hundred eighty-seven thousand, two hundred sixty-seven".