28059238480 has 400 divisors, whose sum is σ = 86912968464. Its totient is φ = 8345272320.

The previous prime is 28059238469. The next prime is 28059238481. The reversal of 28059238480 is 8483295082.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 41835024 + 28017403456 = 6468^2 + 167384^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28059238481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 42449350 + ... + 42450010.

Almost surely, 2^28059238480 is an apocalyptic number.

28059238480 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 28059238480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43456484232).

28059238480 is an abundant number, since it is smaller than the sum of its proper divisors (58853729984).

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

28059238480 is a wasteful number, since it uses less digits than its factorization.

28059238480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 28059238480 in words is "twenty-eight billion, fifty-nine million, two hundred thirty-eight thousand, four hundred eighty".