20258338 has 16 divisors (see below), whose sum is σ = 30857400. Its totient is φ = 9974016.

The previous prime is 20258323. The next prime is 20258341. The reversal of 20258338 is 83385202.

It can be written as a sum of positive squares in 4 ways, for example, as 7059649 + 13198689 = 2657^2 + 3633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46570 + ... + 47002.

Almost surely, 2^20258338 is an apocalyptic number.

20258338 is a deficient number, since it is larger than the sum of its proper divisors (10599062).

20258338 is a wasteful number, since it uses less digits than its factorization.

20258338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20258338 is about 4500.9263490975. The cubic root of 20258338 is about 272.6054940420.

The spelling of 20258338 in words is "twenty million, two hundred fifty-eight thousand, three hundred thirty-eight".