21830052860 has 288 divisors, whose sum is σ = 59259863040. Its totient is φ = 6610222080.

The previous prime is 21830052791. The next prime is 21830052863. The reversal of 21830052860 is 6825003812.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 21830052860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21830052863) 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, 157050671 + ... + 157050809.

Almost surely, 2^21830052860 is an apocalyptic number.

21830052860 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 21830052860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29629931520).

21830052860 is an abundant number, since it is smaller than the sum of its proper divisors (37429810180).

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

21830052860 is a wasteful number, since it uses less digits than its factorization.

21830052860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 21830052860 in words is "twenty-one billion, eight hundred thirty million, fifty-two thousand, eight hundred sixty".