20346485 has 16 divisors (see below), whose sum is σ = 25330800. Its totient is φ = 15676416.

The previous prime is 20346463. The next prime is 20346497. The reversal of 20346485 is 58464302.

It can be written as a sum of positive squares in 8 ways, for example, as 508369 + 19838116 = 713^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346485 - 2¹² = 20342389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19661 + ... + 20669.

It is an arithmetic number, because the mean of its divisors is an integer number (1583175).

Almost surely, 2^20346485 is an apocalyptic number.

It is an amenable number.

20346485 is a deficient number, since it is larger than the sum of its proper divisors (4984315).

20346485 is a wasteful number, since it uses less digits than its factorization.

20346485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 20346485 is about 4510.7078158533. The cubic root of 20346485 is about 273.0003041318. Note that the first 3 decimals are identical.

The spelling of 20346485 in words is "twenty million, three hundred forty-six thousand, four hundred eighty-five".