21628222934 has 8 divisors (see below), whose sum is σ = 33054454080. Its totient is φ = 10610071576.

The previous prime is 21628222927. The next prime is 21628222943. The reversal of 21628222934 is 43922282612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21628222891 and 21628222900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102019814 + ... + 102020025.

It is an arithmetic number, because the mean of its divisors is an integer number (4131806760).

Almost surely, 2^21628222934 is an apocalyptic number.

21628222934 is a deficient number, since it is larger than the sum of its proper divisors (11426231146).

21628222934 is a wasteful number, since it uses less digits than its factorization.

21628222934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204039894.

The product of its digits is 165888, while the sum is 41.

The spelling of 21628222934 in words is "twenty-one billion, six hundred twenty-eight million, two hundred twenty-two thousand, nine hundred thirty-four".