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68972604 = 223171991699
BaseRepresentation
bin1000001110001…
…11000000111100
311210210011121220
410013013000330
5120124110404
610502153340
71465154211
oct407070074
9153704556
1068972604
1135a2a158
121b122850
131139bcbc
149235b08
1560c64d9
hex41c703c

68972604 has 48 divisors (see below), whose sum is σ = 171360000. Its totient is φ = 21517056.

The previous prime is 68972569. The next prime is 68972623. The reversal of 68972604 is 40627986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39747 + ... + 41445.

It is an arithmetic number, because the mean of its divisors is an integer number (3570000).

Almost surely, 268972604 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 68972604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85680000).

68972604 is an abundant number, since it is smaller than the sum of its proper divisors (102387396).

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

68972604 is a wasteful number, since it uses less digits than its factorization.

68972604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 68972604 is about 8304.9746537843. The cubic root of 68972604 is about 410.1023024509.

The spelling of 68972604 in words is "sixty-eight million, nine hundred seventy-two thousand, six hundred four".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 199 204 398 597 796 1194 1699 2388 3383 3398 5097 6766 6796 10149 10194 13532 20298 20388 28883 40596 57766 86649 115532 173298 338101 346596 676202 1014303 1352404 2028606 4057212 5747717 11495434 17243151 22990868 34486302 68972604