20030495 has 8 divisors (see below), whose sum is σ = 24812160. Its totient is φ = 15507360.

The previous prime is 20030489. The next prime is 20030497. The reversal of 20030495 is 59403002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20030495 - 2⁸ = 20030239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20030495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64460 + ... + 64769.

It is an arithmetic number, because the mean of its divisors is an integer number (3101520).

Almost surely, 2^20030495 is an apocalyptic number.

20030495 is a deficient number, since it is larger than the sum of its proper divisors (4781665).

20030495 is a wasteful number, since it uses less digits than its factorization.

20030495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129265.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20030495 is about 4475.5441010005. The cubic root of 20030495 is about 271.5796518759.

Adding to 20030495 its reverse (59403002), we get a palindrome (79433497).

The spelling of 20030495 in words is "twenty million, thirty thousand, four hundred ninety-five".