Search a number
-
+
1375046868 = 2231323791789
BaseRepresentation
bin101000111110101…
…1000110011010100
310112211101121200210
41101331120303110
510304002444433
6344240005420
746034463666
oct12175306324
93484347623
101375046868
116461a6078
12324600870
1318bb52a00
14d0898536
1580ab6463
hex51f58cd4

1375046868 has 72 divisors (see below), whose sum is σ = 3485344800. Its totient is φ = 421739136.

The previous prime is 1375046867. The next prime is 1375046879. The reversal of 1375046868 is 8686405731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375046863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767718 + ... + 769506.

Almost surely, 21375046868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375046868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742672400).

1375046868 is an abundant number, since it is smaller than the sum of its proper divisors (2110297932).

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

1375046868 is a wasteful number, since it uses less digits than its factorization.

1375046868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 1375046868 is about 37081.6243980762. The cubic root of 1375046868 is about 1112.0026795046.

The spelling of 1375046868 in words is "one billion, three hundred seventy-five million, forty-six thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 169 338 379 507 676 758 1014 1137 1516 1789 2028 2274 3578 4548 4927 5367 7156 9854 10734 14781 19708 21468 23257 29562 46514 59124 64051 69771 93028 128102 139542 192153 256204 279084 302341 384306 604682 678031 768612 907023 1209364 1356062 1814046 2034093 2712124 3628092 4068186 8136372 8814403 17628806 26443209 35257612 52886418 105772836 114587239 229174478 343761717 458348956 687523434 1375046868