28152270028 has 48 divisors (see below), whose sum is σ = 54237949920. Its totient is φ = 12726189056.

The previous prime is 28152270023. The next prime is 28152270059. The reversal of 28152270028 is 82007225182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28152270023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352251 + ... + 424717.

It is an arithmetic number, because the mean of its divisors is an integer number (1129957290).

Almost surely, 2^28152270028 is an apocalyptic number.

It is an amenable number.

28152270028 is a deficient number, since it is larger than the sum of its proper divisors (26085679892).

28152270028 is a wasteful number, since it uses less digits than its factorization.

28152270028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72714 (or 72712 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The spelling of 28152270028 in words is "twenty-eight billion, one hundred fifty-two million, two hundred seventy thousand, twenty-eight".