Search a number
-
+
68395897400 = 23522357145091
BaseRepresentation
bin111111101100101101…
…101001001000111000
320112112121221120210012
4333230231221020320
52110033322204100
651230505241052
74640625351455
oct775455511070
9215477846705
1068395897400
1127008779046
1211309793188
1365b000640c
14344b97482c
151ba48a1135
hexfecb69238

68395897400 has 48 divisors (see below), whose sum is σ = 159089025240. Its totient is φ = 27346563200.

The previous prime is 68395897393. The next prime is 68395897459. The reversal of 68395897400 is 479859386.

It is a self number, because there is not a number n which added to its sum of digits gives 68395897400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398855 + ... + 543945.

Almost surely, 268395897400 is an apocalyptic number.

It is an amenable number.

68395897400 is an abundant number, since it is smaller than the sum of its proper divisors (90693127840).

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

68395897400 is a wasteful number, since it uses less digits than its factorization.

68395897400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147464 (or 147455 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 68395897400 in words is "sixty-eight billion, three hundred ninety-five million, eight hundred ninety-seven thousand, four hundred".

Divisors: 1 2 4 5 8 10 20 25 40 50 100 200 2357 4714 9428 11785 18856 23570 47140 58925 94280 117850 145091 235700 290182 471400 580364 725455 1160728 1450910 2901820 3627275 5803640 7254550 14509100 29018200 341979487 683958974 1367917948 1709897435 2735835896 3419794870 6839589740 8549487175 13679179480 17098974350 34197948700 68395897400