20320950 has 96 divisors (see below), whose sum is σ = 57558816. Its totient is φ = 4700160.

The previous prime is 20320939. The next prime is 20320961. The reversal of 20320950 is 5902302.

It is an interprime number because it is at equal distance from previous prime (20320939) and next prime (20320961).

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, 32844 + ... + 33456.

It is an arithmetic number, because the mean of its divisors is an integer number (599571).

Almost surely, 2^20320950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20320950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28779408).

20320950 is an abundant number, since it is smaller than the sum of its proper divisors (37237866).

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

20320950 is a wasteful number, since it uses less digits than its factorization.

20320950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 20320950 is about 4507.8764401878. The cubic root of 20320950 is about 272.8860504733.

The spelling of 20320950 in words is "twenty million, three hundred twenty thousand, nine hundred fifty".