2864428 has 12 divisors (see below), whose sum is σ = 5728912. Its totient is φ = 1227600.

The previous prime is 2864423. The next prime is 2864441. The reversal of 2864428 is 8244682.

2864428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2864393 and 2864402.

It is not an unprimeable number, because it can be changed into a prime (2864423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51123 + ... + 51178.

2^2864428 is an apocalyptic number.

2864428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2864428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2864428 is a wasteful number, since it uses less digits than its factorization.

2864428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102312 (or 102310 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 2864428 is about 1692.4621118359. The cubic root of 2864428 is about 142.0188429667.

The spelling of 2864428 in words is "two million, eight hundred sixty-four thousand, four hundred twenty-eight".