20115150 has 96 divisors (see below), whose sum is σ = 55496448. Its totient is φ = 4780800.

The previous prime is 20115127. The next prime is 20115191. The reversal of 20115150 is 5151102.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120367 + ... + 120533.

It is an arithmetic number, because the mean of its divisors is an integer number (578088).

Almost surely, 2^20115150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20115150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27748224).

20115150 is an abundant number, since it is smaller than the sum of its proper divisors (35381298).

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

20115150 is a wasteful number, since it uses less digits than its factorization.

20115150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 20115150 is about 4484.9916387882. The cubic root of 20115150 is about 271.9617070516.

Adding to 20115150 its reverse (5151102), we get a palindrome (25266252).

It can be divided in two parts, 201 and 15150, that added together give a palindrome (15351).

The spelling of 20115150 in words is "twenty million, one hundred fifteen thousand, one hundred fifty".