428146236 has 120 divisors (see below), whose sum is σ = 1285380096. Its totient is φ = 121733280.

The previous prime is 428146217. The next prime is 428146253. The reversal of 428146236 is 632641824.

428146236 is a `hidden beast` number, since 4 + 28 + 1 + 4 + 623 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 428146236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 705045 + ... + 705651.

Almost surely, 2^428146236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428146236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642690048).

428146236 is an abundant number, since it is smaller than the sum of its proper divisors (857233860).

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

428146236 is a wasteful number, since it uses less digits than its factorization.

428146236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 930 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 428146236 is about 20691.6948556661. The cubic root of 428146236 is about 753.6980241876.

The spelling of 428146236 in words is "four hundred twenty-eight million, one hundred forty-six thousand, two hundred thirty-six".