20483693 has 4 divisors (see below), whose sum is σ = 20492988. Its totient is φ = 20474400.

The previous prime is 20483689. The next prime is 20483699. The reversal of 20483693 is 39638402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39638402 = 2 ⋅19819201.

It can be written as a sum of positive squares in 2 ways, for example, as 12264004 + 8219689 = 3502^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 20483693 - 2² = 20483689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20483699) 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 3 ways as a sum of consecutive naturals, for example, 743 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (5123247).

Almost surely, 2^20483693 is an apocalyptic number.

It is an amenable number.

20483693 is a deficient number, since it is larger than the sum of its proper divisors (9295).

20483693 is an equidigital number, since it uses as much as digits as its factorization.

20483693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20483693 is about 4525.8914039115. The cubic root of 20483693 is about 273.6125956392.

The spelling of 20483693 in words is "twenty million, four hundred eighty-three thousand, six hundred ninety-three".