20728266833422 has 16 divisors (see below), whose sum is σ = 31875233385744. Its totient is φ = 10103577640000.

The previous prime is 20728266833399. The next prime is 20728266833467. The reversal of 20728266833422 is 22433866282702.

It is a super-2 number, since 2×20728266833422² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97043104 + ... + 97256467.

It is an arithmetic number, because the mean of its divisors is an integer number (1992202086609).

Almost surely, 2^{20728266833422} is an apocalyptic number.

20728266833422 is a deficient number, since it is larger than the sum of its proper divisors (11146966552322).

20728266833422 is a wasteful number, since it uses less digits than its factorization.

20728266833422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194300915.

The product of its (nonzero) digits is 18579456, while the sum is 55.

The spelling of 20728266833422 in words is "twenty trillion, seven hundred twenty-eight billion, two hundred sixty-six million, eight hundred thirty-three thousand, four hundred twenty-two".