20218150 has 24 divisors (see below), whose sum is σ = 39243024. Its totient is φ = 7735200.

The previous prime is 20218141. The next prime is 20218183. The reversal of 20218150 is 5181202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7641 + ... + 9940.

It is an arithmetic number, because the mean of its divisors is an integer number (1635126).

Almost surely, 2^20218150 is an apocalyptic number.

20218150 is a deficient number, since it is larger than the sum of its proper divisors (19024874).

20218150 is a wasteful number, since it uses less digits than its factorization.

20218150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17616 (or 17611 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 20218150 is about 4496.4597184896. The cubic root of 20218150 is about 272.4251119859.

Adding to 20218150 its reverse (5181202), we get a palindrome (25399352).

The spelling of 20218150 in words is "twenty million, two hundred eighteen thousand, one hundred fifty".