50218740 has 144 divisors (see below), whose sum is σ = 179053056. Its totient is φ = 11232000.

The previous prime is 50218709. The next prime is 50218741. The reversal of 50218740 is 4781205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50218741) 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, 24765 + ... + 26715.

It is an arithmetic number, because the mean of its divisors is an integer number (1243424).

Almost surely, 2^50218740 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 50218740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89526528).

50218740 is an abundant number, since it is smaller than the sum of its proper divisors (128834316).

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

50218740 is a wasteful number, since it uses less digits than its factorization.

50218740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1985 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 50218740 is about 7086.5181859641. The cubic root of 50218740 is about 368.9395983713.

Adding to 50218740 its reverse (4781205), we get a palindrome (54999945).

The spelling of 50218740 in words is "fifty million, two hundred eighteen thousand, seven hundred forty".