28988858769 has 8 divisors (see below), whose sum is σ = 41625028032. Its totient is φ = 17839297680.

The previous prime is 28988858737. The next prime is 28988858783. The reversal of 28988858769 is 96785888982.

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

It is not a de Polignac number, because 28988858769 - 2⁵ = 28988858737 is a prime.

It is a super-2 number, since 2×28988858769² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28988858694 and 28988858703.

It is not an unprimeable number, because it can be changed into a prime (28988858069) 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, 371651997 + ... + 371652074.

It is an arithmetic number, because the mean of its divisors is an integer number (5203128504).

Almost surely, 2^28988858769 is an apocalyptic number.

It is an amenable number.

28988858769 is a deficient number, since it is larger than the sum of its proper divisors (12636169263).

28988858769 is a wasteful number, since it uses less digits than its factorization.

28988858769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743304087.

The product of its digits is 1114767360, while the sum is 78.

The spelling of 28988858769 in words is "twenty-eight billion, nine hundred eighty-eight million, eight hundred fifty-eight thousand, seven hundred sixty-nine".