20430295 has 4 divisors (see below), whose sum is σ = 24516360. Its totient is φ = 16344232.

The previous prime is 20430251. The next prime is 20430307. The reversal of 20430295 is 59203402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20430295 - 2⁷ = 20430167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043025 + ... + 2043034.

It is an arithmetic number, because the mean of its divisors is an integer number (6129090).

Almost surely, 2^20430295 is an apocalyptic number.

20430295 is a deficient number, since it is larger than the sum of its proper divisors (4086065).

20430295 is an equidigital number, since it uses as much as digits as its factorization.

20430295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086064.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20430295 is about 4519.9883849408. The cubic root of 20430295 is about 273.3746326980.

Adding to 20430295 its reverse (59203402), we get a palindrome (79633697).

The spelling of 20430295 in words is "twenty million, four hundred thirty thousand, two hundred ninety-five".