2800428 has 24 divisors (see below), whose sum is σ = 6597360. Its totient is φ = 924480.

The previous prime is 2800403. The next prime is 2800439. The reversal of 2800428 is 8240082.

It is a junction number, because it is equal to n+sod(n) for n = 2800398 and 2800407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (274890).

2^2800428 is an apocalyptic number.

It is an amenable number.

2800428 is an abundant number, since it is smaller than the sum of its proper divisors (3796932).

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

2800428 is a wasteful number, since it uses less digits than its factorization.

2800428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 2800428 is about 1673.4479376425. The cubic root of 2800428 is about 140.9531558084.

The spelling of 2800428 in words is "two million, eight hundred thousand, four hundred twenty-eight".