50020020 has 36 divisors (see below), whose sum is σ = 151727940. Its totient is φ = 13338624.

The previous prime is 50020013. The next prime is 50020037. The reversal of 50020020 is 2002005.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 25040016 = 4998^2 + 5004^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 50019984 and 50020011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138765 + ... + 139124.

It is an arithmetic number, because the mean of its divisors is an integer number (4214665).

Almost surely, 2^50020020 is an apocalyptic number.

It is an amenable number.

50020020 is an abundant number, since it is smaller than the sum of its proper divisors (101707920).

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

50020020 is a wasteful number, since it uses less digits than its factorization.

50020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277904 (or 277899 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 50020020 is about 7072.4832979654. The cubic root of 50020020 is about 368.4523128434.

Adding to 50020020 its reverse (2002005), we get a palindrome (52022025).

The spelling of 50020020 in words is "fifty million, twenty thousand, twenty".