20348465 has 4 divisors (see below), whose sum is σ = 24418164. Its totient is φ = 16278768.

The previous prime is 20348453. The next prime is 20348501. The reversal of 20348465 is 56484302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5387041 + 14961424 = 2321^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 20348465 - 2¹² = 20344369 is a prime.

It is a super-3 number, since 3×20348465³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034842 + ... + 2034851.

It is an arithmetic number, because the mean of its divisors is an integer number (6104541).

Almost surely, 2^20348465 is an apocalyptic number.

It is an amenable number.

20348465 is a deficient number, since it is larger than the sum of its proper divisors (4069699).

20348465 is an equidigital number, since it uses as much as digits as its factorization.

20348465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069698.

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

The square root of 20348465 is about 4510.9272882635. The cubic root of 20348465 is about 273.0091594381.

The spelling of 20348465 in words is "twenty million, three hundred forty-eight thousand, four hundred sixty-five".