2856428 has 6 divisors (see below), whose sum is σ = 4998756. Its totient is φ = 1428212.

The previous prime is 2856421. The next prime is 2856431. The reversal of 2856428 is 8246582.

It is not an unprimeable number, because it can be changed into a prime (2856421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357050 + ... + 357057.

It is an arithmetic number, because the mean of its divisors is an integer number (833126).

2^2856428 is an apocalyptic number.

It is an amenable number.

2856428 is a deficient number, since it is larger than the sum of its proper divisors (2142328).

2856428 is a wasteful number, since it uses less digits than its factorization.

2856428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714111 (or 714109 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 2856428 is about 1690.0970386342. The cubic root of 2856428 is about 141.8865058883.

The spelling of 2856428 in words is "two million, eight hundred fifty-six thousand, four hundred twenty-eight".