20919026 has 8 divisors (see below), whose sum is σ = 31808604. Its totient is φ = 10316160.

The previous prime is 20919011. The next prime is 20919037. The reversal of 20919026 is 62091902.

It can be written as a sum of positive squares in 2 ways, for example, as 20693401 + 225625 = 4549^2 + 475^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20919026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71495 + ... + 71786.

Almost surely, 2^20919026 is an apocalyptic number.

20919026 is a deficient number, since it is larger than the sum of its proper divisors (10889578).

20919026 is a wasteful number, since it uses less digits than its factorization.

20919026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143356.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20919026 is about 4573.7321740565. The cubic root of 20919026 is about 275.5373559226.

The spelling of 20919026 in words is "twenty million, nine hundred nineteen thousand, twenty-six".