50320440 has 192 divisors, whose sum is σ = 176117760. Its totient is φ = 12908160.

The previous prime is 50320421. The next prime is 50320447. The reversal of 50320440 is 4402305.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50320447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 301237 + ... + 301403.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^50320440 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 50320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

50320440 is an abundant number, since it is smaller than the sum of its proper divisors (125797320).

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

50320440 is a wasteful number, since it uses less digits than its factorization.

50320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 50320440 is about 7093.6901539326. The cubic root of 50320440 is about 369.1884819359.

Adding to 50320440 its reverse (4402305), we get a palindrome (54722745).

The spelling of 50320440 in words is "fifty million, three hundred twenty thousand, four hundred forty".