21884804350 has 24 divisors (see below), whose sum is σ = 40857083640. Its totient is φ = 8721373920.

The previous prime is 21884804339. The next prime is 21884804369. The reversal of 21884804350 is 5340848812.

It is a happy number.

It is a super-2 number, since 2×21884804350² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21884804297 and 21884804306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 800112 + ... + 827011.

It is an arithmetic number, because the mean of its divisors is an integer number (1702378485).

Almost surely, 2^21884804350 is an apocalyptic number.

21884804350 is a deficient number, since it is larger than the sum of its proper divisors (18972279290).

21884804350 is a wasteful number, since it uses less digits than its factorization.

21884804350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627404 (or 1627399 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 21884804350 in words is "twenty-one billion, eight hundred eighty-four million, eight hundred four thousand, three hundred fifty".