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68780092 = 22211227359
BaseRepresentation
bin1000001100110…
…00000000111100
311210102101112211
410012120000330
5120101430332
610454110204
71463423023
oct406300074
9153371484
1068780092
1135908557
121b04b364
13113324a4
1491c58ba
156089447
hex419803c

68780092 has 24 divisors (see below), whose sum is σ = 121806720. Its totient is φ = 33981360.

The previous prime is 68780059. The next prime is 68780093. The reversal of 68780092 is 29008786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68780093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191409 + ... + 191767.

It is an arithmetic number, because the mean of its divisors is an integer number (5075280).

Almost surely, 268780092 is an apocalyptic number.

It is an amenable number.

68780092 is a deficient number, since it is larger than the sum of its proper divisors (53026628).

68780092 is a wasteful number, since it uses less digits than its factorization.

68780092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 68780092 is about 8293.3763932430. The cubic root of 68780092 is about 409.7203963170.

The spelling of 68780092 in words is "sixty-eight million, seven hundred eighty thousand, ninety-two".

Divisors: 1 2 4 211 227 359 422 454 718 844 908 1436 47897 75749 81493 95794 151498 162986 191588 302996 325972 17195023 34390046 68780092