20930338 has 24 divisors (see below), whose sum is σ = 37169244. Its totient is φ = 8780640.

The previous prime is 20930323. The next prime is 20930387. The reversal of 20930338 is 83303902.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15944049 + 4986289 = 3993^2 + 2233^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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, 181 + ... + 6472.

Almost surely, 2^20930338 is an apocalyptic number.

20930338 is a deficient number, since it is larger than the sum of its proper divisors (16238906).

20930338 is a wasteful number, since it uses less digits than its factorization.

20930338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6690 (or 6679 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20930338 is about 4574.9686337723. The cubic root of 20930338 is about 275.5870127425.

The spelling of 20930338 in words is "twenty million, nine hundred thirty thousand, three hundred thirty-eight".