20703399 has 8 divisors (see below), whose sum is σ = 29228400. Its totient is φ = 12990336.

The previous prime is 20703391. The next prime is 20703421. The reversal of 20703399 is 99330702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20703399 - 2³ = 20703391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202924 + ... + 203025.

It is an arithmetic number, because the mean of its divisors is an integer number (3653550).

Almost surely, 2^20703399 is an apocalyptic number.

20703399 is a deficient number, since it is larger than the sum of its proper divisors (8525001).

20703399 is a wasteful number, since it uses less digits than its factorization.

20703399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405969.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 20703399 is about 4550.0987901363. The cubic root of 20703399 is about 274.5873657298.

The spelling of 20703399 in words is "twenty million, seven hundred three thousand, three hundred ninety-nine".