428213232 has 30 divisors (see below), whose sum is σ = 1198402712. Its totient is φ = 142737696.

The previous prime is 428213231. The next prime is 428213249. The reversal of 428213232 is 232312824.

428213232 is a `hidden beast` number, since 428 + 2 + 1 + 3 + 232 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 428213196 and 428213205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428213231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1486708 + ... + 1486995.

Almost surely, 2^428213232 is an apocalyptic number.

It is an amenable number.

428213232 is an abundant number, since it is smaller than the sum of its proper divisors (770189480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428213232 is a wasteful number, since it uses less digits than its factorization.

428213232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973717 (or 2973708 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 428213232 is about 20693.3137027398. The cubic root of 428213232 is about 753.7373348367.

The spelling of 428213232 in words is "four hundred twenty-eight million, two hundred thirteen thousand, two hundred thirty-two".