42856828 has 12 divisors (see below), whose sum is σ = 85713712. Its totient is φ = 18367200.

The previous prime is 42856823. The next prime is 42856829. The reversal of 42856828 is 82865824.

42856828 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42856823) 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, 765273 + ... + 765328.

Almost surely, 2^42856828 is an apocalyptic number.

It is an amenable number.

42856828 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.

42856828 is a wasteful number, since it uses less digits than its factorization.

42856828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530612 (or 1530610 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 42856828 is about 6546.5126594241. The cubic root of 42856828 is about 349.9505453934.

The spelling of 42856828 in words is "forty-two million, eight hundred fifty-six thousand, eight hundred twenty-eight".