50820640 has 96 divisors (see below), whose sum is σ = 132024816. Its totient is φ = 18370560.

The previous prime is 50820617. The next prime is 50820641. The reversal of 50820640 is 4602805.

It can be written as a sum of positive squares in 8 ways, for example, as 13512976 + 37307664 = 3676^2 + 6108^2 .

It is not an unprimeable number, because it can be changed into a prime (50820641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110010 + ... + 110470.

Almost surely, 2^50820640 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 50820640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66012408).

50820640 is an abundant number, since it is smaller than the sum of its proper divisors (81204176).

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

50820640 is a wasteful number, since it uses less digits than its factorization.

50820640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 50820640 is about 7128.8596563546. The cubic root of 50820640 is about 370.4077316779.

The spelling of 50820640 in words is "fifty million, eight hundred twenty thousand, six hundred forty".