20486120 has 32 divisors (see below), whose sum is σ = 46222920. Its totient is φ = 8171520.

The previous prime is 20486119. The next prime is 20486129. The reversal of 20486120 is 2168402.

It can be written as a sum of positive squares in 4 ways, for example, as 7540516 + 12945604 = 2746^2 + 3598^2 .

It is a super-2 number, since 2×20486120² = 839362225308800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20486129) 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, 26540 + ... + 27300.

Almost surely, 2^20486120 is an apocalyptic number.

20486120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20486120 is an abundant number, since it is smaller than the sum of its proper divisors (25736800).

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

20486120 is a wasteful number, since it uses less digits than its factorization.

20486120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20486120 is about 4526.1595199462. The cubic root of 20486120 is about 273.6234014957.

The spelling of 20486120 in words is "twenty million, four hundred eighty-six thousand, one hundred twenty".