50039920 has 80 divisors (see below), whose sum is σ = 139991040. Its totient is φ = 16250112.

The previous prime is 50039893. The next prime is 50039929. The reversal of 50039920 is 2993005.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50039929) 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, 8289 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (1749888).

Almost surely, 2^50039920 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 50039920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69995520).

50039920 is an abundant number, since it is smaller than the sum of its proper divisors (89951120).

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

50039920 is a wasteful number, since it uses less digits than its factorization.

50039920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742 (or 4736 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 50039920 is about 7073.8900189358. The cubic root of 50039920 is about 368.5011681410.

The spelling of 50039920 in words is "fifty million, thirty-nine thousand, nine hundred twenty".