21441728230 has 32 divisors (see below), whose sum is σ = 42348204864. Its totient is φ = 7767566976.

The previous prime is 21441728207. The next prime is 21441728237. The reversal of 21441728230 is 3282714412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441728237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1549114 + ... + 1562893.

It is an arithmetic number, because the mean of its divisors is an integer number (1323381402).

Almost surely, 2^21441728230 is an apocalyptic number.

21441728230 is a deficient number, since it is larger than the sum of its proper divisors (20906476634).

21441728230 is a wasteful number, since it uses less digits than its factorization.

21441728230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112080.

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 21441728230 in words is "twenty-one billion, four hundred forty-one million, seven hundred twenty-eight thousand, two hundred thirty".