20100260 has 12 divisors (see below), whose sum is σ = 42210588. Its totient is φ = 8040096.

The previous prime is 20100257. The next prime is 20100263. The reversal of 20100260 is 6200102.

It is an interprime number because it is at equal distance from previous prime (20100257) and next prime (20100263).

It can be written as a sum of positive squares in 2 ways, for example, as 9498724 + 10601536 = 3082^2 + 3256^2 .

It is not an unprimeable number, because it can be changed into a prime (20100263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 502487 + ... + 502526.

It is an arithmetic number, because the mean of its divisors is an integer number (3517549).

Almost surely, 2^20100260 is an apocalyptic number.

20100260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100260 is an abundant number, since it is smaller than the sum of its proper divisors (22110328).

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

20100260 is a wasteful number, since it uses less digits than its factorization.

20100260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005022 (or 1005020 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20100260 is about 4483.3313506811. The cubic root of 20100260 is about 271.8945850162.

Adding to 20100260 its reverse (6200102), we get a palindrome (26300362).

The spelling of 20100260 in words is "twenty million, one hundred thousand, two hundred sixty".