20919126 has 8 divisors (see below), whose sum is σ = 41838264. Its totient is φ = 6973040.

The previous prime is 20919109. The next prime is 20919127. The reversal of 20919126 is 62191902.

It is a happy number.

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

20919126 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20919093 and 20919102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20919127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1743255 + ... + 1743266.

It is an arithmetic number, because the mean of its divisors is an integer number (5229783).

Almost surely, 2^20919126 is an apocalyptic number.

20919126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20919126 is a wasteful number, since it uses less digits than its factorization.

20919126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486526.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 20919126 is about 4573.7431060347. The cubic root of 20919126 is about 275.5377949757.

The spelling of 20919126 in words is "twenty million, nine hundred nineteen thousand, one hundred twenty-six".