42856328 has 8 divisors (see below), whose sum is σ = 80355630. Its totient is φ = 21428160.

The previous prime is 42856327. The next prime is 42856351. The reversal of 42856328 is 82365824.

It can be written as a sum of positive squares in only one way, i.e., 42797764 + 58564 = 6542^2 + 242^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42856291 and 42856300.

It is not an unprimeable number, because it can be changed into a prime (42856321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2678513 + ... + 2678528.

Almost surely, 2^42856328 is an apocalyptic number.

It is an amenable number.

42856328 is a deficient number, since it is larger than the sum of its proper divisors (37499302).

42856328 is a wasteful number, since it uses less digits than its factorization.

42856328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357047 (or 5357043 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 42856328 is about 6546.4744710416. The cubic root of 42856328 is about 349.9491844593.

The spelling of 42856328 in words is "forty-two million, eight hundred fifty-six thousand, three hundred twenty-eight".