28028030024 has 8 divisors (see below), whose sum is σ = 52552556310. Its totient is φ = 14014015008.

The previous prime is 28028029979. The next prime is 28028030027. The reversal of 28028030024 is 42003082082.

It can be written as a sum of positive squares in only one way, i.e., 19412848900 + 8615181124 = 139330^2 + 92818^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28028030027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1751751869 + ... + 1751751884.

Almost surely, 2^28028030024 is an apocalyptic number.

It is an amenable number.

28028030024 is a deficient number, since it is larger than the sum of its proper divisors (24524526286).

28028030024 is a wasteful number, since it uses less digits than its factorization.

28028030024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503503759 (or 3503503755 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 28028030024 in words is "twenty-eight billion, twenty-eight million, thirty thousand, twenty-four".