20320049 has 8 divisors (see below), whose sum is σ = 21718368. Its totient is φ = 18944320.

The previous prime is 20320043. The next prime is 20320057. The reversal of 20320049 is 94002302.

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 20320049 - 2⁴ = 20320033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20320049.

It is not an unprimeable number, because it can be changed into a prime (20320043) 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, 3767 + ... + 7404.

It is an arithmetic number, because the mean of its divisors is an integer number (2714796).

Almost surely, 2^20320049 is an apocalyptic number.

It is an amenable number.

20320049 is a deficient number, since it is larger than the sum of its proper divisors (1398319).

20320049 is a wasteful number, since it uses less digits than its factorization.

20320049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11295.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20320049 is about 4507.7765028892. The cubic root of 20320049 is about 272.8820172963.

The spelling of 20320049 in words is "twenty million, three hundred twenty thousand, forty-nine".