28950029538 has 16 divisors (see below), whose sum is σ = 61305945120. Its totient is φ = 9082362176.

The previous prime is 28950029519. The next prime is 28950029539. The reversal of 28950029538 is 83592005982.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (28950029539) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 141911808 + ... + 141912011.

It is an arithmetic number, because the mean of its divisors is an integer number (3831621570).

Almost surely, 2^28950029538 is an apocalyptic number.

28950029538 is an abundant number, since it is smaller than the sum of its proper divisors (32355915582).

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

28950029538 is a wasteful number, since it uses less digits than its factorization.

28950029538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283823841.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 28950029538 in words is "twenty-eight billion, nine hundred fifty million, twenty-nine thousand, five hundred thirty-eight".