20012260 has 24 divisors (see below), whose sum is σ = 42166656. Its totient is φ = 7978080.

The previous prime is 20012219. The next prime is 20012261. The reversal of 20012260 is 6221002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012260.

It is not an unprimeable number, because it can be changed into a prime (20012261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5109 + ... + 8131.

It is an arithmetic number, because the mean of its divisors is an integer number (1756944).

Almost surely, 2^20012260 is an apocalyptic number.

20012260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012260 is an abundant number, since it is smaller than the sum of its proper divisors (22154396).

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

20012260 is a wasteful number, since it uses less digits than its factorization.

20012260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20012260 is about 4473.5064546729. The cubic root of 20012260 is about 271.4972149300.

Adding to 20012260 its reverse (6221002), we get a palindrome (26233262).

The spelling of 20012260 in words is "twenty million, twelve thousand, two hundred sixty".