863044428 has 24 divisors (see below), whose sum is σ = 2015003200. Its totient is φ = 287505360.

The previous prime is 863044411. The next prime is 863044439. The reversal of 863044428 is 824440368.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 778 + ... + 41553.

Almost surely, 2^863044428 is an apocalyptic number.

It is an amenable number.

863044428 is an abundant number, since it is smaller than the sum of its proper divisors (1151958772).

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

863044428 is a wasteful number, since it uses less digits than its factorization.

863044428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44037 (or 44035 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The square root of 863044428 is about 29377.6178067589. The cubic root of 863044428 is about 952.0893729503.

The spelling of 863044428 in words is "eight hundred sixty-three million, forty-four thousand, four hundred twenty-eight".