20070146 has 16 divisors (see below), whose sum is σ = 31735800. Its totient is φ = 9504768.

The previous prime is 20070143. The next prime is 20070161. The reversal of 20070146 is 64107002.

It can be written as a sum of positive squares in 4 ways, for example, as 15295921 + 4774225 = 3911^2 + 2185^2 .

It is a super-2 number, since 2×20070146² = 805621520922632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20070143) 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 7 ways as a sum of consecutive naturals, for example, 191 + ... + 6338.

Almost surely, 2^20070146 is an apocalyptic number.

20070146 is a deficient number, since it is larger than the sum of its proper divisors (11665654).

20070146 is a wasteful number, since it uses less digits than its factorization.

20070146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20070146 is about 4479.9716516960. The cubic root of 20070146 is about 271.7587339391.

Adding to 20070146 its reverse (64107002), we get a palindrome (84177148).

The spelling of 20070146 in words is "twenty million, seventy thousand, one hundred forty-six".