21849482592 has 576 divisors, whose sum is σ = 81495590400. Its totient is φ = 5652218880.

The previous prime is 21849482539. The next prime is 21849482593. The reversal of 21849482592 is 29528494812.

21849482592 is a `hidden beast` number, since 2 + 1 + 8 + 4 + 9 + 48 + 2 + 592 = 666.

It is a super-2 number, since 2×21849482592² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21849482593) 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, 18500242 + ... + 18501422.

It is an arithmetic number, because the mean of its divisors is an integer number (141485400).

Almost surely, 2^21849482592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21849482592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40747795200).

21849482592 is an abundant number, since it is smaller than the sum of its proper divisors (59646107808).

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

21849482592 is a wasteful number, since it uses less digits than its factorization.

21849482592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1235 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 21849482592 in words is "twenty-one billion, eight hundred forty-nine million, four hundred eighty-two thousand, five hundred ninety-two".