20453316 has 24 divisors (see below), whose sum is σ = 51395904. Its totient is φ = 6293280.

The previous prime is 20453311. The next prime is 20453327. The reversal of 20453316 is 61335402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20453311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65400 + ... + 65711.

It is an arithmetic number, because the mean of its divisors is an integer number (2141496).

Almost surely, 2^20453316 is an apocalyptic number.

20453316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20453316 is an abundant number, since it is smaller than the sum of its proper divisors (30942588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20453316 is a wasteful number, since it uses less digits than its factorization.

20453316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131131 (or 131129 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20453316 is about 4522.5342453098. The cubic root of 20453316 is about 273.4772743077.

Adding to 20453316 its reverse (61335402), we get a palindrome (81788718).

The spelling of 20453316 in words is "twenty million, four hundred fifty-three thousand, three hundred sixteen".