28552982640 has 960 divisors, whose sum is σ = 118506700800. Its totient is φ = 5550944256.

The previous prime is 28552982533. The next prime is 28552982641. The reversal of 28552982640 is 4628925582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552982641) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 361430121 + ... + 361430199.

It is an arithmetic number, because the mean of its divisors is an integer number (123444480).

Almost surely, 2^28552982640 is an apocalyptic number.

28552982640 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 28552982640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59253350400).

28552982640 is an abundant number, since it is smaller than the sum of its proper divisors (89953718160).

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

28552982640 is a wasteful number, since it uses less digits than its factorization.

28552982640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 28552982640 in words is "twenty-eight billion, five hundred fifty-two million, nine hundred eighty-two thousand, six hundred forty".