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68992092 = 223213147419
BaseRepresentation
bin1000001110010…
…11110001011100
311210211011100200
410013023301130
5120130221332
610502423500
71465265061
oct407136134
9153734320
1068992092
1135a42864
121b131b90
13113a7b30
14923cc68
1560cc17c
hex41cbc5c

68992092 has 36 divisors (see below), whose sum is σ = 187813080. Its totient is φ = 21228192.

The previous prime is 68992039. The next prime is 68992109. The reversal of 68992092 is 29029986.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 73242 + ... + 74177.

It is an arithmetic number, because the mean of its divisors is an integer number (5217030).

Almost surely, 268992092 is an apocalyptic number.

It is an amenable number.

68992092 is an abundant number, since it is smaller than the sum of its proper divisors (118820988).

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

68992092 is a wasteful number, since it uses less digits than its factorization.

68992092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147442 (or 147437 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 68992092 is about 8306.1478436156. The cubic root of 68992092 is about 410.1409232009.

The spelling of 68992092 in words is "sixty-eight million, nine hundred ninety-two thousand, ninety-two".

Divisors: 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 234 468 147419 294838 442257 589676 884514 1326771 1769028 1916447 2653542 3832894 5307084 5749341 7665788 11498682 17248023 22997364 34496046 68992092