20310190 has 32 divisors (see below), whose sum is σ = 37778400. Its totient is φ = 7857024.

The previous prime is 20310181. The next prime is 20310193. The reversal of 20310190 is 9101302.

20310190 = 78² + 79² + ... + 394².

It is a super-2 number, since 2×20310190² = 825007635672200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310193) 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, 63912 + ... + 64228.

It is an arithmetic number, because the mean of its divisors is an integer number (1180575).

Almost surely, 2^20310190 is an apocalyptic number.

20310190 is a deficient number, since it is larger than the sum of its proper divisors (17468210).

20310190 is a wasteful number, since it uses less digits than its factorization.

20310190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 20310190 is about 4506.6828155529. The cubic root of 20310190 is about 272.8378773268.

Adding to 20310190 its reverse (9101302), we get a palindrome (29411492).

The spelling of 20310190 in words is "twenty million, three hundred ten thousand, one hundred ninety".