50401988 has 72 divisors (see below), whose sum is σ = 112077504. Its totient is φ = 19656000.

The previous prime is 50401979. The next prime is 50402021. The reversal of 50401988 is 88910405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333713 + ... + 333863.

It is an arithmetic number, because the mean of its divisors is an integer number (1556632).

Almost surely, 2^50401988 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 50401988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56038752).

50401988 is an abundant number, since it is smaller than the sum of its proper divisors (61675516).

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

50401988 is a wasteful number, since it uses less digits than its factorization.

50401988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 50401988 is about 7099.4357522271. The cubic root of 50401988 is about 369.3878067275.

The spelling of 50401988 in words is "fifty million, four hundred one thousand, nine hundred eighty-eight".