2866428 has 42 divisors (see below), whose sum is σ = 7528584. Its totient is φ = 954504.

The previous prime is 2866417. The next prime is 2866429. The reversal of 2866428 is 8246682.

2866428 is a `hidden beast` number, since 2 + 8 + 6 + 642 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2866392 and 2866401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2866429) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2425 + ... + 3407.

It is an arithmetic number, because the mean of its divisors is an integer number (179252).

2^2866428 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 2866428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3764292).

2866428 is an abundant number, since it is smaller than the sum of its proper divisors (4662156).

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

2866428 is an equidigital number, since it uses as much as digits as its factorization.

2866428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005 (or 988 counting only the distinct ones).

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

The square root of 2866428 is about 1693.0528639118. The cubic root of 2866428 is about 142.0518887271.

The spelling of 2866428 in words is "two million, eight hundred sixty-six thousand, four hundred twenty-eight".