20120650 has 24 divisors (see below), whose sum is σ = 40827744. Its totient is φ = 7316400.

The previous prime is 20120641. The next prime is 20120651. The reversal of 20120650 is 5602102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20120651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17742 + ... + 18841.

It is an arithmetic number, because the mean of its divisors is an integer number (1701156).

Almost surely, 2^20120650 is an apocalyptic number.

20120650 is an abundant number, since it is smaller than the sum of its proper divisors (20707094).

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

20120650 is a wasteful number, since it uses less digits than its factorization.

20120650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36606 (or 36601 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20120650 is about 4485.6047529848. The cubic root of 20120650 is about 271.9864919041.

Adding to 20120650 its reverse (5602102), we get a palindrome (25722752).

The spelling of 20120650 in words is "twenty million, one hundred twenty thousand, six hundred fifty".