20350660 has 24 divisors (see below), whose sum is σ = 46622016. Its totient is φ = 7400160.

The previous prime is 20350643. The next prime is 20350669. The reversal of 20350660 is 6605302.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20350669) 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, 46032 + ... + 46471.

It is an arithmetic number, because the mean of its divisors is an integer number (1942584).

Almost surely, 2^20350660 is an apocalyptic number.

20350660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20350660 is an abundant number, since it is smaller than the sum of its proper divisors (26271356).

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

20350660 is a wasteful number, since it uses less digits than its factorization.

20350660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92523 (or 92521 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20350660 is about 4511.1705797941. The cubic root of 20350660 is about 273.0189756341.

Adding to 20350660 its reverse (6605302), we get a palindrome (26955962).

The spelling of 20350660 in words is "twenty million, three hundred fifty thousand, six hundred sixty".