20450353 has 16 divisors (see below), whose sum is σ = 25603200. Its totient is φ = 15868800.

The previous prime is 20450351. The next prime is 20450357. The reversal of 20450353 is 35305402.

It is a cyclic number.

It is not a de Polignac number, because 20450353 - 2¹ = 20450351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20450351) 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, 26493 + ... + 27253.

It is an arithmetic number, because the mean of its divisors is an integer number (1600200).

Almost surely, 2^20450353 is an apocalyptic number.

It is an amenable number.

20450353 is a deficient number, since it is larger than the sum of its proper divisors (5152847).

20450353 is a wasteful number, since it uses less digits than its factorization.

20450353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 20450353 is about 4522.2066516248. The cubic root of 20450353 is about 273.4640677728.

Adding to 20450353 its reverse (35305402), we get a palindrome (55755755).

The spelling of 20450353 in words is "twenty million, four hundred fifty thousand, three hundred fifty-three".