28250643042 has 24 divisors (see below), whose sum is σ = 61267350144. Its totient is φ = 9408015864.

The previous prime is 28250643013. The next prime is 28250643089. The reversal of 28250643042 is 24034605282.

28250643042 is a `hidden beast` number, since 2 + 8 + 2 + 5 + 0 + 643 + 0 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28250642988 and 28250643006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719098 + ... + 757365.

It is an arithmetic number, because the mean of its divisors is an integer number (2552806256).

Almost surely, 2^28250643042 is an apocalyptic number.

28250643042 is an abundant number, since it is smaller than the sum of its proper divisors (33016707102).

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

28250643042 is a wasteful number, since it uses less digits than its factorization.

28250643042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477534 (or 1477531 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 28250643042 in words is "twenty-eight billion, two hundred fifty million, six hundred forty-three thousand, forty-two".