21830941140 has 24 divisors (see below), whose sum is σ = 61126635360. Its totient is φ = 5821584288.

The previous prime is 21830941129. The next prime is 21830941147. The reversal of 21830941140 is 4114903812.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21830941147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181924450 + ... + 181924569.

It is an arithmetic number, because the mean of its divisors is an integer number (2546943140).

Almost surely, 2^21830941140 is an apocalyptic number.

21830941140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21830941140 is an abundant number, since it is smaller than the sum of its proper divisors (39295694220).

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

21830941140 is a wasteful number, since it uses less digits than its factorization.

21830941140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363849031 (or 363849029 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 21830941140 in words is "twenty-one billion, eight hundred thirty million, nine hundred forty-one thousand, one hundred forty".