28368941040 has 400 divisors, whose sum is σ = 113149365120. Its totient is φ = 6515043840.

The previous prime is 28368941033. The next prime is 28368941053. The reversal of 28368941040 is 4014986382.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1343847 + ... + 1364793.

Almost surely, 2^28368941040 is an apocalyptic number.

28368941040 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 28368941040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56574682560).

28368941040 is an abundant number, since it is smaller than the sum of its proper divisors (84780424080).

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

28368941040 is a wasteful number, since it uses less digits than its factorization.

28368941040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002 (or 20987 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 28368941040 in words is "twenty-eight billion, three hundred sixty-eight million, nine hundred forty-one thousand, forty".