20513060 has 12 divisors (see below), whose sum is σ = 43077468. Its totient is φ = 8205216.

The previous prime is 20513057. The next prime is 20513069. The reversal of 20513060 is 6031502.

It can be written as a sum of positive squares in 2 ways, for example, as 11464996 + 9048064 = 3386^2 + 3008^2 .

It is not an unprimeable number, because it can be changed into a prime (20513069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512807 + ... + 512846.

It is an arithmetic number, because the mean of its divisors is an integer number (3589789).

Almost surely, 2^20513060 is an apocalyptic number.

20513060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20513060 is an abundant number, since it is smaller than the sum of its proper divisors (22564408).

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

20513060 is a wasteful number, since it uses less digits than its factorization.

20513060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025662 (or 1025660 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20513060 is about 4529.1345751700. The cubic root of 20513060 is about 273.7432905648.

Adding to 20513060 its reverse (6031502), we get a palindrome (26544562).

The spelling of 20513060 in words is "twenty million, five hundred thirteen thousand, sixty".