20380485 has 32 divisors (see below), whose sum is σ = 34513920. Its totient is φ = 10252800.

The previous prime is 20380471. The next prime is 20380489. The reversal of 20380485 is 58408302.

It is not a de Polignac number, because 20380485 - 2⁵ = 20380453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18531 + ... + 19599.

It is an arithmetic number, because the mean of its divisors is an integer number (1078560).

Almost surely, 2^20380485 is an apocalyptic number.

It is an amenable number.

20380485 is a deficient number, since it is larger than the sum of its proper divisors (14133435).

20380485 is a wasteful number, since it uses less digits than its factorization.

20380485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 20380485 is about 4514.4750525393. The cubic root of 20380485 is about 273.1522852545.

Adding to 20380485 its reverse (58408302), we get a palindrome (78788787).

The spelling of 20380485 in words is "twenty million, three hundred eighty thousand, four hundred eighty-five".