Cookie Consent by FreePrivacyPolicy.com
Search a number
1912 = 23239
BaseRepresentation
bin11101111000
32121211
4131320
530122
612504
75401
oct3570
92554
101912
111489
121134
13b41
149a8
15877
hex778

1912 has 8 divisors (see below), whose sum is σ = 3600. Its totient is φ = 952.

The previous prime is 1907. The next prime is 1913. The reversal of 1912 is 2191.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 11, base 12 and base 16.

It is a nialpdrome in base 13 and base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1892 and 1901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112 + ... + 127.

It is an arithmetic number, because the mean of its divisors is an integer number (450).

21912 is an apocalyptic number.

It is an amenable number.

1912 is a deficient number, since it is larger than the sum of its proper divisors (1688).

1912 is a wasteful number, since it uses less digits than its factorization.

1912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its digits is 18, while the sum is 13.

The square root of 1912 is about 43.7264222182. The cubic root of 1912 is about 12.4116435898.

The spelling of 1912 in words is "one thousand, nine hundred twelve".

Divisors: 1 2 4 8 239 478 956 1912