20011150 has 24 divisors (see below), whose sum is σ = 38841264. Its totient is φ = 7656000.

The previous prime is 20011139. The next prime is 20011153. The reversal of 20011150 is 5111002.

It is a happy number.

It is a super-2 number, since 2×20011150² = 800892248645000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011153) 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 11 ways as a sum of consecutive naturals, for example, 7551 + ... + 9850.

It is an arithmetic number, because the mean of its divisors is an integer number (1618386).

Almost surely, 2^20011150 is an apocalyptic number.

20011150 is a deficient number, since it is larger than the sum of its proper divisors (18830114).

20011150 is a wasteful number, since it uses less digits than its factorization.

20011150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17436 (or 17431 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 20011150 is about 4473.3823891995. The cubic root of 20011150 is about 271.4921952158.

Adding to 20011150 its reverse (5111002), we get a palindrome (25122152).

The spelling of 20011150 in words is "twenty million, eleven thousand, one hundred fifty".