50139264 has 128 divisors (see below), whose sum is σ = 159022080. Its totient is φ = 13685760.

The previous prime is 50139263. The next prime is 50139281. The reversal of 50139264 is 46293105.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50139263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61419 + ... + 62229.

It is an arithmetic number, because the mean of its divisors is an integer number (1242360).

Almost surely, 2^50139264 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 50139264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79511040).

50139264 is an abundant number, since it is smaller than the sum of its proper divisors (108882816).

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

50139264 is a wasteful number, since it uses less digits than its factorization.

50139264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 50139264 is about 7080.9084162980. The cubic root of 50139264 is about 368.7448681082.

It can be divided in two parts, 50139 and 264, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 50139264 in words is "fifty million, one hundred thirty-nine thousand, two hundred sixty-four".