Search a number
-
+
68371900 = 2252683719
BaseRepresentation
bin1000001001101…
…00010110111100
311202122122121121
410010310112330
5120000400100
610441240324
71460102662
oct404642674
9152578547
1068371900
1135659903
121aa930a4
131121b75c
14911ac32
15600851a
hex41345bc

68371900 has 18 divisors (see below), whose sum is σ = 148367240. Its totient is φ = 27348720.

The previous prime is 68371889. The next prime is 68371903. The reversal of 68371900 is 917386.

It is a super-2 number, since 2×683719002 = 9349433419220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68371903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341760 + ... + 341959.

Almost surely, 268371900 is an apocalyptic number.

It is an amenable number.

68371900 is an abundant number, since it is smaller than the sum of its proper divisors (79995340).

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

68371900 is a wasteful number, since it uses less digits than its factorization.

68371900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683733 (or 683726 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 68371900 is about 8268.7302531888. The cubic root of 68371900 is about 408.9082595034.

The spelling of 68371900 in words is "sixty-eight million, three hundred seventy-one thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 683719 1367438 2734876 3418595 6837190 13674380 17092975 34185950 68371900