28528676787 has 8 divisors (see below), whose sum is σ = 40964253904. Its totient is φ = 17556108768.

The previous prime is 28528676767. The next prime is 28528676797. The reversal of 28528676787 is 78767682582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28528676787 - 2⁶ = 28528676723 is a prime.

It is a super-2 number, since 2×28528676787² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28528676767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365752228 + ... + 365752305.

It is an arithmetic number, because the mean of its divisors is an integer number (5120531738).

Almost surely, 2^28528676787 is an apocalyptic number.

28528676787 is a deficient number, since it is larger than the sum of its proper divisors (12435577117).

28528676787 is a wasteful number, since it uses less digits than its factorization.

28528676787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731504549.

The product of its digits is 126443520, while the sum is 66.

The spelling of 28528676787 in words is "twenty-eight billion, five hundred twenty-eight million, six hundred seventy-six thousand, seven hundred eighty-seven".