20349242 has 16 divisors (see below), whose sum is σ = 31910760. Its totient is φ = 9719808.

The previous prime is 20349229. The next prime is 20349253. The reversal of 20349242 is 24294302.

It can be written as a sum of positive squares in 4 ways, for example, as 10621081 + 9728161 = 3259^2 + 3119^2 .

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, 3818 + ... + 7434.

Almost surely, 2^20349242 is an apocalyptic number.

20349242 is a deficient number, since it is larger than the sum of its proper divisors (11561518).

20349242 is a wasteful number, since it uses less digits than its factorization.

20349242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20349242 is about 4511.0134116404. The cubic root of 20349242 is about 273.0126343180.

The spelling of 20349242 in words is "twenty million, three hundred forty-nine thousand, two hundred forty-two".