28403350900 has 72 divisors (see below), whose sum is σ = 64597115520. Its totient is φ = 10819712640.

The previous prime is 28403350889. The next prime is 28403350903. The reversal of 28403350900 is 905330482.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28403350903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 499737 + ... + 553663.

It is an arithmetic number, because the mean of its divisors is an integer number (897182160).

Almost surely, 2^28403350900 is an apocalyptic number.

28403350900 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 28403350900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32298557760).

28403350900 is an abundant number, since it is smaller than the sum of its proper divisors (36193764620).

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

28403350900 is a wasteful number, since it uses less digits than its factorization.

28403350900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54193 (or 54186 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 28403350900 in words is "twenty-eight billion, four hundred three million, three hundred fifty thousand, nine hundred".