50989920 has 96 divisors (see below), whose sum is σ = 169102080. Its totient is φ = 12879360.

The previous prime is 50989909. The next prime is 50989921. The reversal of 50989920 is 2998905.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50989921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6325 + ... + 11915.

It is an arithmetic number, because the mean of its divisors is an integer number (1761480).

Almost surely, 2^50989920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50989920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84551040).

50989920 is an abundant number, since it is smaller than the sum of its proper divisors (118112160).

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

50989920 is a wasteful number, since it uses less digits than its factorization.

50989920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5628 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 50989920 is about 7140.7226525051. The cubic root of 50989920 is about 370.8185433089.

The spelling of 50989920 in words is "fifty million, nine hundred eighty-nine thousand, nine hundred twenty".