20145060 has 72 divisors (see below), whose sum is σ = 65814840. Its totient is φ = 4958208.

The previous prime is 20145031. The next prime is 20145077. The reversal of 20145060 is 6054102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 20142144 = 54^2 + 4488^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1965 + ... + 6644.

It is an arithmetic number, because the mean of its divisors is an integer number (914095).

Almost surely, 2^20145060 is an apocalyptic number.

20145060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20145060 is an abundant number, since it is smaller than the sum of its proper divisors (45669780).

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

20145060 is a wasteful number, since it uses less digits than its factorization.

20145060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8637 (or 8632 counting only the distinct ones).

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

The square root of 20145060 is about 4488.3248545532. The cubic root of 20145060 is about 272.0964371135.

Adding to 20145060 its reverse (6054102), we get a palindrome (26199162).

The spelling of 20145060 in words is "twenty million, one hundred forty-five thousand, sixty".