21794854224 has 160 divisors (see below), whose sum is σ = 66378501504. Its totient is φ = 6075095040.

The previous prime is 21794854157. The next prime is 21794854259. The reversal of 21794854224 is 42245849712.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2005734 + ... + 2016570.

Almost surely, 2^21794854224 is an apocalyptic number.

21794854224 is a gapful number since it is divisible by the number (24) 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 21794854224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33189250752).

21794854224 is an abundant number, since it is smaller than the sum of its proper divisors (44583647280).

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

21794854224 is a wasteful number, since it uses less digits than its factorization.

21794854224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11165 (or 11159 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The spelling of 21794854224 in words is "twenty-one billion, seven hundred ninety-four million, eight hundred fifty-four thousand, two hundred twenty-four".