20050215 has 16 divisors (see below), whose sum is σ = 32160768. Its totient is φ = 10666656.

The previous prime is 20050213. The next prime is 20050241. The reversal of 20050215 is 51205002.

It is not a de Polignac number, because 20050215 - 2¹ = 20050213 is a prime.

It is a super-2 number, since 2×20050215² = 804022243092450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 20050194 and 20050203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20050213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5502 + ... + 8388.

It is an arithmetic number, because the mean of its divisors is an integer number (2010048).

Almost surely, 2^20050215 is an apocalyptic number.

20050215 is a deficient number, since it is larger than the sum of its proper divisors (12110553).

20050215 is a wasteful number, since it uses less digits than its factorization.

20050215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 20050215 is about 4477.7466431231. The cubic root of 20050215 is about 271.6687459328.

Adding to 20050215 its reverse (51205002), we get a palindrome (71255217).

The spelling of 20050215 in words is "twenty million, fifty thousand, two hundred fifteen".