20415060 has 36 divisors (see below), whose sum is σ = 61926228. Its totient is φ = 5443968.

The previous prime is 20415041. The next prime is 20415071. The reversal of 20415060 is 6051402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5391684 + 15023376 = 2322^2 + 3876^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 56529 + ... + 56888.

It is an arithmetic number, because the mean of its divisors is an integer number (1720173).

Almost surely, 2^20415060 is an apocalyptic number.

20415060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20415060 is an abundant number, since it is smaller than the sum of its proper divisors (41511168).

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

20415060 is a wasteful number, since it uses less digits than its factorization.

20415060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113432 (or 113427 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20415060 is about 4518.3027786991. The cubic root of 20415060 is about 273.3066634035.

Adding to 20415060 its reverse (6051402), we get a palindrome (26466462).

The spelling of 20415060 in words is "twenty million, four hundred fifteen thousand, sixty".