20089650 has 144 divisors (see below), whose sum is σ = 61228224. Its totient is φ = 4268160.

The previous prime is 20089613. The next prime is 20089651. The reversal of 20089650 is 5698002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20089651) 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 71 ways as a sum of consecutive naturals, for example, 379024 + ... + 379076.

It is an arithmetic number, because the mean of its divisors is an integer number (425196).

Almost surely, 2^20089650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20089650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30614112).

20089650 is an abundant number, since it is smaller than the sum of its proper divisors (41138574).

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

20089650 is a wasteful number, since it uses less digits than its factorization.

20089650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20089650 is about 4482.1479225925. The cubic root of 20089650 is about 271.8467363934.

The spelling of 20089650 in words is "twenty million, eighty-nine thousand, six hundred fifty".