20486600 has 24 divisors (see below), whose sum is σ = 47631810. Its totient is φ = 8194560.

The previous prime is 20486573. The next prime is 20486611. The reversal of 20486600 is 668402.

It can be written as a sum of positive squares in 3 ways, for example, as 17123044 + 3363556 = 4138^2 + 1834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20486600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51017 + ... + 51416.

Almost surely, 2^20486600 is an apocalyptic number.

20486600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20486600 is an abundant number, since it is smaller than the sum of its proper divisors (27145210).

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

20486600 is a wasteful number, since it uses less digits than its factorization.

20486600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102449 (or 102440 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20486600 is about 4526.2125447221. The cubic root of 20486600 is about 273.6255385233.

The spelling of 20486600 in words is "twenty million, four hundred eighty-six thousand, six hundred".