20949319 has 8 divisors (see below), whose sum is σ = 21677040. Its totient is φ = 20232000.

The previous prime is 20949317. The next prime is 20949323. The reversal of 20949319 is 91394902.

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 20949319 - 2¹ = 20949317 is a prime.

It is a super-2 number, since 2×20949319² = 877747933127522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20949317) 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, 1612 + ... + 6670.

It is an arithmetic number, because the mean of its divisors is an integer number (2709630).

Almost surely, 2^20949319 is an apocalyptic number.

20949319 is a deficient number, since it is larger than the sum of its proper divisors (727721).

20949319 is a wasteful number, since it uses less digits than its factorization.

20949319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 20949319 is about 4577.0426041277. The cubic root of 20949319 is about 275.6702943509.

The spelling of 20949319 in words is "twenty million, nine hundred forty-nine thousand, three hundred nineteen".