20030999 has 8 divisors (see below), whose sum is σ = 20946912. Its totient is φ = 19118880.

The previous prime is 20030987. The next prime is 20031029. The reversal of 20030999 is 99903002.

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

It is a cyclic number.

It is not a de Polignac number, because 20030999 - 2²⁰ = 18982423 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 (20030939) 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, 19109 + ... + 20129.

It is an arithmetic number, because the mean of its divisors is an integer number (2618364).

Almost surely, 2^20030999 is an apocalyptic number.

20030999 is a deficient number, since it is larger than the sum of its proper divisors (915913).

20030999 is a wasteful number, since it uses less digits than its factorization.

20030999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 20030999 is about 4475.6004066494. The cubic root of 20030999 is about 271.5819296528.

The spelling of 20030999 in words is "twenty million, thirty thousand, nine hundred ninety-nine".