20300290 has 16 divisors (see below), whose sum is σ = 37801080. Its totient is φ = 7840000.

The previous prime is 20300279. The next prime is 20300299. The reversal of 20300290 is 9200302.

It can be written as a sum of positive squares in 4 ways, for example, as 19105641 + 1194649 = 4371^2 + 1093^2 .

It is not an unprimeable number, because it can be changed into a prime (20300299) 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, 34711 + ... + 35290.

Almost surely, 2^20300290 is an apocalyptic number.

20300290 is a deficient number, since it is larger than the sum of its proper divisors (17500790).

20300290 is a wasteful number, since it uses less digits than its factorization.

20300290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70037.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20300290 is about 4505.5843128278. The cubic root of 20300290 is about 272.7935394192.

Adding to 20300290 its reverse (9200302), we get a palindrome (29500592).

The spelling of 20300290 in words is "twenty million, three hundred thousand, two hundred ninety".