50720240 has 20 divisors (see below), whose sum is σ = 117924744. Its totient is φ = 20288064.

The previous prime is 50720237. The next prime is 50720251. The reversal of 50720240 is 4202705.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316922 + ... + 317081.

Almost surely, 2^50720240 is an apocalyptic number.

It is an amenable number.

50720240 is an abundant number, since it is smaller than the sum of its proper divisors (67204504).

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

50720240 is a wasteful number, since it uses less digits than its factorization.

50720240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634016 (or 634010 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 50720240 is about 7121.8143755647. The cubic root of 50720240 is about 370.1636480863.

Adding to 50720240 its reverse (4202705), we get a palindrome (54922945).

The spelling of 50720240 in words is "fifty million, seven hundred twenty thousand, two hundred forty".