20360240 has 40 divisors (see below), whose sum is σ = 47549040. Its totient is φ = 8107776.

The previous prime is 20360213. The next prime is 20360243. The reversal of 20360240 is 4206302.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20360243) 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 7 ways as a sum of consecutive naturals, for example, 24146 + ... + 24974.

It is an arithmetic number, because the mean of its divisors is an integer number (1188726).

Almost surely, 2^20360240 is an apocalyptic number.

20360240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20360240 is an abundant number, since it is smaller than the sum of its proper divisors (27188800).

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

20360240 is a wasteful number, since it uses less digits than its factorization.

20360240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20360240 is about 4512.2322635254. The cubic root of 20360240 is about 273.0618098137.

Adding to 20360240 its reverse (4206302), we get a palindrome (24566542).

The spelling of 20360240 in words is "twenty million, three hundred sixty thousand, two hundred forty".