28190764480 has 224 divisors, whose sum is σ = 70163009280. Its totient is φ = 10782720000.

The previous prime is 28190764463. The next prime is 28190764487. The reversal of 28190764480 is 8446709182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28190764487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155749990 + ... + 155750170.

It is an arithmetic number, because the mean of its divisors is an integer number (313227720).

Almost surely, 2^28190764480 is an apocalyptic number.

28190764480 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 28190764480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35081504640).

28190764480 is an abundant number, since it is smaller than the sum of its proper divisors (41972244800).

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

28190764480 is a wasteful number, since it uses less digits than its factorization.

28190764480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 28190764480 in words is "twenty-eight billion, one hundred ninety million, seven hundred sixty-four thousand, four hundred eighty".