Search a number
-
+
68900212 = 2253325001
BaseRepresentation
bin1000001101101…
…01010101110100
311210122111022201
410012311111310
5120114301322
610500434244
71464433153
oct406652564
9153574281
1068900212
113598a827
121b0a8984
1311375074
14921759a
1560aed27
hex41b5574

68900212 has 12 divisors (see below), whose sum is σ = 122850756. Its totient is φ = 33800000.

The previous prime is 68900207. The next prime is 68900219. The reversal of 68900212 is 21200986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57851236 + 11048976 = 7606^2 + 3324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68900219) 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 3 ways as a sum of consecutive naturals, for example, 162289 + ... + 162712.

It is an arithmetic number, because the mean of its divisors is an integer number (10237563).

Almost surely, 268900212 is an apocalyptic number.

It is an amenable number.

68900212 is a deficient number, since it is larger than the sum of its proper divisors (53950544).

68900212 is a wasteful number, since it uses less digits than its factorization.

68900212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325058 (or 325056 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 68900212 is about 8300.6151579265. The cubic root of 68900212 is about 409.9587743597.

The spelling of 68900212 in words is "sixty-eight million, nine hundred thousand, two hundred twelve".

Divisors: 1 2 4 53 106 212 325001 650002 1300004 17225053 34450106 68900212