28900426900 has 144 divisors (see below), whose sum is σ = 70355496960. Its totient is φ = 10251964800.

The previous prime is 28900426897. The next prime is 28900426909. The reversal of 28900426900 is 962400982.

It is a super-2 number, since 2×28900426900² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900426909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2046865 + ... + 2060935.

It is an arithmetic number, because the mean of its divisors is an integer number (488579840).

Almost surely, 2^28900426900 is an apocalyptic number.

28900426900 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 28900426900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35177748480).

28900426900 is an abundant number, since it is smaller than the sum of its proper divisors (41455070060).

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

28900426900 is a wasteful number, since it uses less digits than its factorization.

28900426900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14174 (or 14167 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 28900426900 in words is "twenty-eight billion, nine hundred million, four hundred twenty-six thousand, nine hundred".