50405784 has 128 divisors (see below), whose sum is σ = 156038400. Its totient is φ = 13340160.

The previous prime is 50405779. The next prime is 50405813. The reversal of 50405784 is 48750405.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64822 + ... + 65594.

It is an arithmetic number, because the mean of its divisors is an integer number (1219050).

Almost surely, 2^50405784 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 50405784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78019200).

50405784 is an abundant number, since it is smaller than the sum of its proper divisors (105632616).

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

50405784 is a wasteful number, since it uses less digits than its factorization.

50405784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 50405784 is about 7099.7030923835. The cubic root of 50405784 is about 369.3970799127.

The spelling of 50405784 in words is "fifty million, four hundred five thousand, seven hundred eighty-four".