20150112 has 48 divisors (see below), whose sum is σ = 53125632. Its totient is φ = 6687360.

The previous prime is 20150111. The next prime is 20150131. The reversal of 20150112 is 21105102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×20150112² = 812054027225088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150111) 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 7 ways as a sum of consecutive naturals, for example, 41133 + ... + 41619.

It is an arithmetic number, because the mean of its divisors is an integer number (1106784).

Almost surely, 2^20150112 is an apocalyptic number.

It is an amenable number.

20150112 is an abundant number, since it is smaller than the sum of its proper divisors (32975520).

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

20150112 is a wasteful number, since it uses less digits than its factorization.

20150112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 20150112 is about 4488.8876127611. The cubic root of 20150112 is about 272.1191807589.

Adding to 20150112 its reverse (21105102), we get a palindrome (41255214).

The spelling of 20150112 in words is "twenty million, one hundred fifty thousand, one hundred twelve".