28707312480 has 1152 divisors, whose sum is σ = 124651021824. Its totient is φ = 5470617600.

The previous prime is 28707312467. The next prime is 28707312533. The reversal of 28707312480 is 8421370782.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 268292587 + ... + 268292693.

It is an arithmetic number, because the mean of its divisors is an integer number (108204012).

Almost surely, 2^28707312480 is an apocalyptic number.

28707312480 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 28707312480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62325510912).

28707312480 is an abundant number, since it is smaller than the sum of its proper divisors (95943709344).

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

28707312480 is a wasteful number, since it uses less digits than its factorization.

28707312480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 28707312480 in words is "twenty-eight billion, seven hundred seven million, three hundred twelve thousand, four hundred eighty".