20235130 has 16 divisors (see below), whose sum is σ = 36493704. Its totient is φ = 8078400.

The previous prime is 20235121. The next prime is 20235143. The reversal of 20235130 is 3153202.

It can be written as a sum of positive squares in 4 ways, for example, as 6195121 + 14040009 = 2489^2 + 3747^2 .

It is a super-2 number, since 2×20235130² = 818920972233800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4480 + ... + 7780.

Almost surely, 2^20235130 is an apocalyptic number.

20235130 is a deficient number, since it is larger than the sum of its proper divisors (16258574).

20235130 is a wasteful number, since it uses less digits than its factorization.

20235130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20235130 is about 4498.3474743510. The cubic root of 20235130 is about 272.5013550981.

Adding to 20235130 its reverse (3153202), we get a palindrome (23388332).

The spelling of 20235130 in words is "twenty million, two hundred thirty-five thousand, one hundred thirty".