28183213480 has 128 divisors (see below), whose sum is σ = 65924928000. Its totient is φ = 10836981760.

The previous prime is 28183213453. The next prime is 28183213493. The reversal of 28183213480 is 8431238182.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29949810 + ... + 29950750.

It is an arithmetic number, because the mean of its divisors is an integer number (515038500).

Almost surely, 2^28183213480 is an apocalyptic number.

28183213480 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 28183213480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32962464000).

28183213480 is an abundant number, since it is smaller than the sum of its proper divisors (37741714520).

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

28183213480 is a wasteful number, since it uses less digits than its factorization.

28183213480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28183213480 in words is "twenty-eight billion, one hundred eighty-three million, two hundred thirteen thousand, four hundred eighty".