28134474480 has 480 divisors, whose sum is σ = 111859697664. Its totient is φ = 6203879424.

The previous prime is 28134474463. The next prime is 28134474481. The reversal of 28134474480 is 8447443182.

28134474480 is a `hidden beast` number, since 2 + 8 + 134 + 474 + 48 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134474481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17291427 + ... + 17293053.

Almost surely, 2^28134474480 is an apocalyptic number.

28134474480 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 28134474480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55929848832).

28134474480 is an abundant number, since it is smaller than the sum of its proper divisors (83725223184).

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

28134474480 is a wasteful number, since it uses less digits than its factorization.

28134474480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The spelling of 28134474480 in words is "twenty-eight billion, one hundred thirty-four million, four hundred seventy-four thousand, four hundred eighty".