50890840 has 256 divisors, whose sum is σ = 162570240. Its totient is φ = 13824000.

The previous prime is 50890837. The next prime is 50890849. The reversal of 50890840 is 4809805.

It is a junction number, because it is equal to n+sod(n) for n = 50890796 and 50890805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50890849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1241220 + ... + 1241260.

It is an arithmetic number, because the mean of its divisors is an integer number (635040).

Almost surely, 2^50890840 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 50890840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81285120).

50890840 is an abundant number, since it is smaller than the sum of its proper divisors (111679400).

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

50890840 is a wasteful number, since it uses less digits than its factorization.

50890840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 50890840 is about 7133.7816058525. The cubic root of 50890840 is about 370.5782047982.

The spelling of 50890840 in words is "fifty million, eight hundred ninety thousand, eight hundred forty".