428627 has 4 divisors (see below), whose sum is σ = 434736. Its totient is φ = 422520.
The previous prime is 428579. The next prime is 428629. The reversal of 428627 is 726824.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 428627 - 26 = 428563 is a prime.
It is a super-2 number, since 2×4286272 = 367442210258, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 428627.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428627.
It is not an unprimeable number, because it can be changed into a prime (428629) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2948 + ... + 3089.
It is an arithmetic number, because the mean of its divisors is an integer number (108684).
2428627 is an apocalyptic number.
428627 is a deficient number, since it is larger than the sum of its proper divisors (6109).
428627 is an equidigital number, since it uses as much as digits as its factorization.
428627 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6108.
The product of its digits is 5376, while the sum is 29.
The square root of 428627 is about 654.6961127118. The cubic root of 428627 is about 75.3980027005.
The spelling of 428627 in words is "four hundred twenty-eight thousand, six hundred twenty-seven".
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