50149440 has 168 divisors, whose sum is σ = 188293248. Its totient is φ = 12149760.

The previous prime is 50149427. The next prime is 50149441. The reversal of 50149440 is 4494105.

It is not an unprimeable number, because it can be changed into a prime (50149441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30889 + ... + 32471.

Almost surely, 2^50149440 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 50149440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94146624).

50149440 is an abundant number, since it is smaller than the sum of its proper divisors (138143808).

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

50149440 is a wasteful number, since it uses less digits than its factorization.

50149440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 50149440 is about 7081.6269317156. The cubic root of 50149440 is about 368.7698125905.

The spelling of 50149440 in words is "fifty million, one hundred forty-nine thousand, four hundred forty".