20349965 has 8 divisors (see below), whose sum is σ = 24988128. Its totient is φ = 15901200.

The previous prime is 20349961. The next prime is 20349971. The reversal of 20349965 is 56994302.

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

It is not a de Polignac number, because 20349965 - 2² = 20349961 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 (20349961) 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, 47111 + ... + 47540.

It is an arithmetic number, because the mean of its divisors is an integer number (3123516).

Almost surely, 2^20349965 is an apocalyptic number.

It is an amenable number.

20349965 is a deficient number, since it is larger than the sum of its proper divisors (4638163).

20349965 is an equidigital number, since it uses as much as digits as its factorization.

20349965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94699.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20349965 is about 4511.0935481322. The cubic root of 20349965 is about 273.0158676210.

The spelling of 20349965 in words is "twenty million, three hundred forty-nine thousand, nine hundred sixty-five".