28366663320 has 384 divisors, whose sum is σ = 101189088000. Its totient is φ = 7127170560.

The previous prime is 28366663319. The next prime is 28366663327. The reversal of 28366663320 is 2336666382.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28366663327) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 49678635 + ... + 49679205.

It is an arithmetic number, because the mean of its divisors is an integer number (263513250).

Almost surely, 2^28366663320 is an apocalyptic number.

28366663320 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 28366663320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50594544000).

28366663320 is an abundant number, since it is smaller than the sum of its proper divisors (72822424680).

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

28366663320 is a wasteful number, since it uses less digits than its factorization.

28366663320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 45.

The spelling of 28366663320 in words is "twenty-eight billion, three hundred sixty-six million, six hundred sixty-three thousand, three hundred twenty".