20237146 has 8 divisors (see below), whose sum is σ = 30390804. Its totient is φ = 10106880.

The previous prime is 20237117. The next prime is 20237153. The reversal of 20237146 is 64173202.

It can be written as a sum of positive squares in 2 ways, for example, as 18020025 + 2217121 = 4245^2 + 1489^2 .

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 20237146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3495 + ... + 7258.

Almost surely, 2^20237146 is an apocalyptic number.

20237146 is a deficient number, since it is larger than the sum of its proper divisors (10153658).

20237146 is a wasteful number, since it uses less digits than its factorization.

20237146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20237146 is about 4498.5715510593. The cubic root of 20237146 is about 272.5104044508.

The spelling of 20237146 in words is "twenty million, two hundred thirty-seven thousand, one hundred forty-six".