286423128 has 96 divisors (see below), whose sum is σ = 809040960. Its totient is φ = 94932000.

The previous prime is 286423127. The next prime is 286423133. The reversal of 286423128 is 821324682.

286423128 is a `hidden beast` number, since 2 + 8 + 642 + 3 + 1 + 2 + 8 = 666.

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

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

It is a junction number, because it is equal to n+sod(n) for n = 286423092 and 286423101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286423127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487651 + ... + 488237.

It is an arithmetic number, because the mean of its divisors is an integer number (8427510).

Almost surely, 2^286423128 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 286423128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404520480).

286423128 is an abundant number, since it is smaller than the sum of its proper divisors (522617832).

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

286423128 is a wasteful number, since it uses less digits than its factorization.

286423128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 843 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 286423128 is about 16924.0399432287. The cubic root of 286423128 is about 659.1779848882.

The spelling of 286423128 in words is "two hundred eighty-six million, four hundred twenty-three thousand, one hundred twenty-eight".