21482911800 has 384 divisors, whose sum is σ = 86540889600. Its totient is φ = 4795822080.

The previous prime is 21482911787. The next prime is 21482911817. The reversal of 21482911800 is 811928412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1618792 + ... + 1632008.

It is an arithmetic number, because the mean of its divisors is an integer number (225366900).

Almost surely, 2^21482911800 is an apocalyptic number.

21482911800 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 21482911800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43270444800).

21482911800 is an abundant number, since it is smaller than the sum of its proper divisors (65057977800).

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

21482911800 is a wasteful number, since it uses less digits than its factorization.

21482911800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13292 (or 13277 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 21482911800 in words is "twenty-one billion, four hundred eighty-two million, nine hundred eleven thousand, eight hundred".