20790150 has 96 divisors (see below), whose sum is σ = 56567808. Its totient is φ = 5030400.

The previous prime is 20790139. The next prime is 20790163. The reversal of 20790150 is 5109702.

It is a self number, because there is not a number n which added to its sum of digits gives 20790150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78919 + ... + 79181.

It is an arithmetic number, because the mean of its divisors is an integer number (589248).

Almost surely, 2^20790150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20790150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28283904).

20790150 is an abundant number, since it is smaller than the sum of its proper divisors (35777658).

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

20790150 is a wasteful number, since it uses less digits than its factorization.

20790150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 20790150 is about 4559.6216948339. The cubic root of 20790150 is about 274.9703549311.

Adding to 20790150 its reverse (5109702), we get a palindrome (25899852).

The spelling of 20790150 in words is "twenty million, seven hundred ninety thousand, one hundred fifty".