50905440 has 288 divisors, whose sum is σ = 191056320. Its totient is φ = 12300288.

The previous prime is 50905409. The next prime is 50905457. The reversal of 50905440 is 4450905.

It is a tau number, because it is divible by the number of its divisors (288).

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, 960454 + ... + 960506.

It is an arithmetic number, because the mean of its divisors is an integer number (663390).

Almost surely, 2^50905440 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 50905440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95528160).

50905440 is an abundant number, since it is smaller than the sum of its proper divisors (140150880).

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

50905440 is a wasteful number, since it uses less digits than its factorization.

50905440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 50905440 is about 7134.8048326496. The cubic root of 50905440 is about 370.6136396261.

The spelling of 50905440 in words is "fifty million, nine hundred five thousand, four hundred forty".