20848420 has 24 divisors (see below), whose sum is σ = 44219448. Its totient is φ = 8256000.

The previous prime is 20848393. The next prime is 20848423. The reversal of 20848420 is 2484802.

It can be written as a sum of positive squares in 4 ways, for example, as 7540516 + 13307904 = 2746^2 + 3648^2 .

It is not an unprimeable number, because it can be changed into a prime (20848423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3141 + ... + 7180.

It is an arithmetic number, because the mean of its divisors is an integer number (1842477).

Almost surely, 2^20848420 is an apocalyptic number.

20848420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20848420 is an abundant number, since it is smaller than the sum of its proper divisors (23371028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20848420 is a wasteful number, since it uses less digits than its factorization.

20848420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431 (or 10429 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 20848420 is about 4566.0070083170. The cubic root of 20848420 is about 275.2270081491.

The spelling of 20848420 in words is "twenty million, eight hundred forty-eight thousand, four hundred twenty".