842666028 has 24 divisors (see below), whose sum is σ = 1985691120. Its totient is φ = 278107200.

The previous prime is 842665997. The next prime is 842666053. The reversal of 842666028 is 820666248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346423 + ... + 348846.

It is an arithmetic number, because the mean of its divisors is an integer number (82737130).

Almost surely, 2^842666028 is an apocalyptic number.

It is an amenable number.

842666028 is an abundant number, since it is smaller than the sum of its proper divisors (1143025092).

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

842666028 is a wasteful number, since it uses less digits than its factorization.

842666028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695377 (or 695375 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 842666028 is about 29028.7104088349. The cubic root of 842666028 is about 944.5359564855.

The spelling of 842666028 in words is "eight hundred forty-two million, six hundred sixty-six thousand, twenty-eight".