20346365 has 16 divisors (see below), whose sum is σ = 27841968. Its totient is φ = 14140416.

The previous prime is 20346343. The next prime is 20346383. The reversal of 20346365 is 56364302.

It can be written as a sum of positive squares in 8 ways, for example, as 1170724 + 19175641 = 1082^2 + 4379^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346365 - 2⁶ = 20346301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8102 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (1740123).

Almost surely, 2^20346365 is an apocalyptic number.

It is an amenable number.

20346365 is a deficient number, since it is larger than the sum of its proper divisors (7495603).

20346365 is a wasteful number, since it uses less digits than its factorization.

20346365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18448.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 20346365 is about 4510.6945141519. The cubic root of 20346365 is about 272.9997674281. Note that the first 3 decimals are identical.

The spelling of 20346365 in words is "twenty million, three hundred forty-six thousand, three hundred sixty-five".