20300495 has 16 divisors (see below), whose sum is σ = 25043040. Its totient is φ = 15792000.

The previous prime is 20300491. The next prime is 20300507. The reversal of 20300495 is 59400302.

It is not a de Polignac number, because 20300495 - 2² = 20300491 is a prime.

It is a super-2 number, since 2×20300495² = 824220194490050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20300495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30476 + ... + 31134.

It is an arithmetic number, because the mean of its divisors is an integer number (1565190).

Almost surely, 2^20300495 is an apocalyptic number.

20300495 is a deficient number, since it is larger than the sum of its proper divisors (4742545).

20300495 is a wasteful number, since it uses less digits than its factorization.

20300495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826.

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

The square root of 20300495 is about 4505.6070623169. The cubic root of 20300495 is about 272.7944576736.

Adding to 20300495 its reverse (59400302), we get a palindrome (79700797).

The spelling of 20300495 in words is "twenty million, three hundred thousand, four hundred ninety-five".