50199840 has 144 divisors (see below), whose sum is σ = 174073536. Its totient is φ = 13171200.

The previous prime is 50199833. The next prime is 50199859. The reversal of 50199840 is 4899105.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 50199795 and 50199804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101995 + ... + 102485.

It is an arithmetic number, because the mean of its divisors is an integer number (1208844).

Almost surely, 2^50199840 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 50199840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87036768).

50199840 is an abundant number, since it is smaller than the sum of its proper divisors (123873696).

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

50199840 is a wasteful number, since it uses less digits than its factorization.

50199840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 50199840 is about 7085.1845424096. The cubic root of 50199840 is about 368.8933086571.

The spelling of 50199840 in words is "fifty million, one hundred ninety-nine thousand, eight hundred forty".