28021470750 has 768 divisors, whose sum is σ = 102777292800. Its totient is φ = 5601052800.

The previous prime is 28021470733. The next prime is 28021470751. The reversal of 28021470750 is 5707412082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28021470751) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1474814241 + ... + 1474814259.

It is an arithmetic number, because the mean of its divisors is an integer number (133824600).

Almost surely, 2^28021470750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28021470750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51388646400).

28021470750 is an abundant number, since it is smaller than the sum of its proper divisors (74755822050).

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

28021470750 is an equidigital number, since it uses as much as digits as its factorization.

28021470750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 28021470750 in words is "twenty-eight billion, twenty-one million, four hundred seventy thousand, seven hundred fifty".