Search a number
-
+
12800950 = 252256019
BaseRepresentation
bin110000110101…
…001110110110
3220002100121021
4300311032312
511234112300
61134211354
7213543361
oct60651666
926070537
1012800950
1172535a8
124353b5a
132862736
1419b30d8
1511ccd1a
hexc353b6

12800950 has 12 divisors (see below), whose sum is σ = 23809860. Its totient is φ = 5120360.

The previous prime is 12800941. The next prime is 12800951. The reversal of 12800950 is 5900821.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800951) 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 5 ways as a sum of consecutive naturals, for example, 127960 + ... + 128059.

It is an arithmetic number, because the mean of its divisors is an integer number (1984155).

Almost surely, 212800950 is an apocalyptic number.

12800950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12800950 is a deficient number, since it is larger than the sum of its proper divisors (11008910).

12800950 is a wasteful number, since it uses less digits than its factorization.

12800950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256031 (or 256026 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 12800950 is about 3577.8415280725. The cubic root of 12800950 is about 233.9272060323.

The spelling of 12800950 in words is "twelve million, eight hundred thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 256019 512038 1280095 2560190 6400475 12800950