50444640 has 96 divisors (see below), whose sum is σ = 176571360. Its totient is φ = 13450752.

The previous prime is 50444623. The next prime is 50444663. The reversal of 50444640 is 4644405.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1519 + ... + 10158.

It is an arithmetic number, because the mean of its divisors is an integer number (1839285).

Almost surely, 2^50444640 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 50444640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88285680).

50444640 is an abundant number, since it is smaller than the sum of its proper divisors (126126720).

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

50444640 is a wasteful number, since it uses less digits than its factorization.

50444640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11701 (or 11687 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 50444640 is about 7102.4390176896. The cubic root of 50444640 is about 369.4919738265.

The spelling of 50444640 in words is "fifty million, four hundred forty-four thousand, six hundred forty".