20230390 has 16 divisors (see below), whose sum is σ = 36739008. Its totient is φ = 8020096.

The previous prime is 20230387. The next prime is 20230393. The reversal of 20230390 is 9303202.

It is an interprime number because it is at equal distance from previous prime (20230387) and next prime (20230393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7822 + ... + 10081.

It is an arithmetic number, because the mean of its divisors is an integer number (2296188).

Almost surely, 2^20230390 is an apocalyptic number.

20230390 is a deficient number, since it is larger than the sum of its proper divisors (16508618).

20230390 is a wasteful number, since it uses less digits than its factorization.

20230390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18023.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 20230390 is about 4497.8205833492. The cubic root of 20230390 is about 272.4800759778.

Adding to 20230390 its reverse (9303202), we get a palindrome (29533592).

The spelling of 20230390 in words is "twenty million, two hundred thirty thousand, three hundred ninety".