20073242 has 24 divisors (see below), whose sum is σ = 35206164. Its totient is φ = 8558592.

The previous prime is 20073211. The next prime is 20073247. The reversal of 20073242 is 24237002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18054001 + 2019241 = 4249^2 + 1421^2 .

It is not an unprimeable number, because it can be changed into a prime (20073247) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24788 + ... + 25584.

Almost surely, 2^20073242 is an apocalyptic number.

20073242 is a deficient number, since it is larger than the sum of its proper divisors (15132922).

20073242 is a wasteful number, since it uses less digits than its factorization.

20073242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20073242 is about 4480.3171762722. The cubic root of 20073242 is about 271.7727069612.

The spelling of 20073242 in words is "twenty million, seventy-three thousand, two hundred forty-two".