21482495328 has 432 divisors, whose sum is σ = 70059835440. Its totient is φ = 5745180672.

The previous prime is 21482495327. The next prime is 21482495339. The reversal of 21482495328 is 82359428412.

It is a super-2 number, since 2×21482495328² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482495327) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 221468976 + ... + 221469072.

It is an arithmetic number, because the mean of its divisors is an integer number (162175545).

Almost surely, 2^21482495328 is an apocalyptic number.

21482495328 is a gapful number since it is divisible by the number (28) 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 21482495328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35029917720).

21482495328 is an abundant number, since it is smaller than the sum of its proper divisors (48577340112).

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

21482495328 is a wasteful number, since it uses less digits than its factorization.

21482495328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 221 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 48.

The spelling of 21482495328 in words is "twenty-one billion, four hundred eighty-two million, four hundred ninety-five thousand, three hundred twenty-eight".