50139648 has 240 divisors, whose sum is σ = 166822656. Its totient is φ = 14929920.

The previous prime is 50139631. The next prime is 50139653. The reversal of 50139648 is 84693105.

50139648 is a `hidden beast` number, since 5 + 0 + 1 + 3 + 9 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 1617393 + ... + 1617423.

Almost surely, 2^50139648 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 50139648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83411328).

50139648 is an abundant number, since it is smaller than the sum of its proper divisors (116683008).

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

50139648 is an equidigital number, since it uses as much as digits as its factorization.

50139648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 50139648 is about 7080.9355314111. The cubic root of 50139648 is about 368.7458094707.

The spelling of 50139648 in words is "fifty million, one hundred thirty-nine thousand, six hundred forty-eight".