20206260 has 60 divisors (see below), whose sum is σ = 63392868. Its totient is φ = 5387904.

The previous prime is 20206247. The next prime is 20206271. The reversal of 20206260 is 6260202.

20206260 is a `hidden beast` number, since 20 + 20 + 626 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10732176 + 9474084 = 3276^2 + 3078^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 4617 + ... + 7856.

Almost surely, 2^20206260 is an apocalyptic number.

20206260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20206260 is an abundant number, since it is smaller than the sum of its proper divisors (43186608).

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

20206260 is a wasteful number, since it uses less digits than its factorization.

20206260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12494 (or 12483 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20206260 is about 4495.1373727618. The cubic root of 20206260 is about 272.3716984317.

Adding to 20206260 its reverse (6260202), we get a palindrome (26466462).

The spelling of 20206260 in words is "twenty million, two hundred six thousand, two hundred sixty".