50890240 has 80 divisors (see below), whose sum is σ = 123840288. Its totient is φ = 20054016.

The previous prime is 50890223. The next prime is 50890243. The reversal of 50890240 is 4209805.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 50890199 and 50890208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50890243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263584 + ... + 263776.

Almost surely, 2^50890240 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 50890240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61920144).

50890240 is an abundant number, since it is smaller than the sum of its proper divisors (72950048).

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

50890240 is a wasteful number, since it uses less digits than its factorization.

50890240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 50890240 is about 7133.7395522965. The cubic root of 50890240 is about 370.5767484274.

The spelling of 50890240 in words is "fifty million, eight hundred ninety thousand, two hundred forty".