20083397 has 4 divisors (see below), whose sum is σ = 20199660. Its totient is φ = 19967136.

The previous prime is 20083391. The next prime is 20083403. The reversal of 20083397 is 79338002.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20083391) and next prime (20083403).

It can be written as a sum of positive squares in 2 ways, for example, as 15413476 + 4669921 = 3926^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 20083397 - 2⁶ = 20083333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20083391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57872 + ... + 58217.

It is an arithmetic number, because the mean of its divisors is an integer number (5049915).

Almost surely, 2^20083397 is an apocalyptic number.

It is an amenable number.

20083397 is a deficient number, since it is larger than the sum of its proper divisors (116263).

20083397 is a wasteful number, since it uses less digits than its factorization.

20083397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116262.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20083397 is about 4481.4503232771. The cubic root of 20083397 is about 271.8185289327.

The spelling of 20083397 in words is "twenty million, eighty-three thousand, three hundred ninety-seven".