28232803040 has 288 divisors, whose sum is σ = 77554005984. Its totient is φ = 9650995200.

The previous prime is 28232803033. The next prime is 28232803051. The reversal of 28232803040 is 4030823282.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 28232802988 and 28232803006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40274690 + ... + 40275390.

It is an arithmetic number, because the mean of its divisors is an integer number (269284743).

Almost surely, 2^28232803040 is an apocalyptic number.

28232803040 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 28232803040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38777002992).

28232803040 is an abundant number, since it is smaller than the sum of its proper divisors (49321202944).

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

28232803040 is a wasteful number, since it uses less digits than its factorization.

28232803040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 28232803040 in words is "twenty-eight billion, two hundred thirty-two million, eight hundred three thousand, forty".