28279403000 has 64 divisors (see below), whose sum is σ = 66657146400. Its totient is φ = 11229139200.

The previous prime is 28279402979. The next prime is 28279403011. The reversal of 28279403000 is 30497282.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33791 + ... + 240209.

Almost surely, 2^28279403000 is an apocalyptic number.

28279403000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28279403000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33328573200).

28279403000 is an abundant number, since it is smaller than the sum of its proper divisors (38377743400).

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

28279403000 is a wasteful number, since it uses less digits than its factorization.

28279403000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206577 (or 206563 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 28279403000 in words is "twenty-eight billion, two hundred seventy-nine million, four hundred three thousand".