20519349 has 8 divisors (see below), whose sum is σ = 28098720. Its totient is φ = 13309776.

The previous prime is 20519347. The next prime is 20519377. The reversal of 20519349 is 94391502.

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

It is not a de Polignac number, because 20519349 - 2¹ = 20519347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20519347) 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 7 ways as a sum of consecutive naturals, for example, 92319 + ... + 92540.

It is an arithmetic number, because the mean of its divisors is an integer number (3512340).

Almost surely, 2^20519349 is an apocalyptic number.

It is an amenable number.

20519349 is a deficient number, since it is larger than the sum of its proper divisors (7579371).

20519349 is a wasteful number, since it uses less digits than its factorization.

20519349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184899.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 20519349 is about 4529.8288047122. The cubic root of 20519349 is about 273.7712629175.

The spelling of 20519349 in words is "twenty million, five hundred nineteen thousand, three hundred forty-nine".