Search a number
-
+
28790131314 = 237103264613
BaseRepresentation
bin11010110100000001…
…101000101001110010
32202022102201012112210
4122310001220221302
5432430233200224
621120452232550
72036306035620
oct326401505162
982272635483
1028790131314
111123430785a
1256b590b756
13293a826a79
1415718aa510
15b377de429
hex6b4068a72

28790131314 has 48 divisors (see below), whose sum is σ = 66452139072. Its totient is φ = 8145764064.

The previous prime is 28790131283. The next prime is 28790131327. The reversal of 28790131314 is 41313109782.

It is a super-2 number, since 2×287901313142 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413272 + ... + 477884.

It is an arithmetic number, because the mean of its divisors is an integer number (1384419564).

Almost surely, 228790131314 is an apocalyptic number.

28790131314 is an abundant number, since it is smaller than the sum of its proper divisors (37662007758).

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

28790131314 is a wasteful number, since it uses less digits than its factorization.

28790131314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64831 (or 64728 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 28790131314 in words is "twenty-eight billion, seven hundred ninety million, one hundred thirty-one thousand, three hundred fourteen".

Divisors: 1 2 3 6 7 14 21 42 103 206 309 618 721 1442 2163 4326 10609 21218 31827 63654 64613 74263 129226 148526 193839 222789 387678 445578 452291 904582 1356873 2713746 6655139 13310278 19965417 39930834 46585973 93171946 139757919 279515838 685479317 1370958634 2056437951 4112875902 4798355219 9596710438 14395065657 28790131314