420827228 has 24 divisors (see below), whose sum is σ = 771348480. Its totient is φ = 200510640.

The previous prime is 420827221. The next prime is 420827249. The reversal of 420827228 is 822728024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420827221) 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, 16493 + ... + 33371.

It is an arithmetic number, because the mean of its divisors is an integer number (32139520).

Almost surely, 2^420827228 is an apocalyptic number.

It is an amenable number.

420827228 is a deficient number, since it is larger than the sum of its proper divisors (350521252).

420827228 is a wasteful number, since it uses less digits than its factorization.

420827228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17177 (or 17175 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 420827228 is about 20514.0739006176. The cubic root of 420827228 is about 749.3785833381.

The spelling of 420827228 in words is "four hundred twenty million, eight hundred twenty-seven thousand, two hundred twenty-eight".