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68738948 = 2261281717
BaseRepresentation
bin1000001100011…
…01111110000100
311210100022002222
410012031332010
5120044121243
610453151512
71463162045
oct406157604
9153308088
1068738948
113588a653
121b02b598
1311319845
1491b48cc
15607c168
hex418df84

68738948 has 12 divisors (see below), whose sum is σ = 122265612. Its totient is φ = 33805920.

The previous prime is 68738911. The next prime is 68738951. The reversal of 68738948 is 84983786.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31382404 + 37356544 = 5602^2 + 6112^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68738948.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140615 + ... + 141102.

It is an arithmetic number, because the mean of its divisors is an integer number (10188801).

Almost surely, 268738948 is an apocalyptic number.

It is an amenable number.

68738948 is a deficient number, since it is larger than the sum of its proper divisors (53526664).

68738948 is a wasteful number, since it uses less digits than its factorization.

68738948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281782 (or 281780 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 68738948 is about 8290.8954884258. The cubic root of 68738948 is about 409.6386822726.

The spelling of 68738948 in words is "sixty-eight million, seven hundred thirty-eight thousand, nine hundred forty-eight".

Divisors: 1 2 4 61 122 244 281717 563434 1126868 17184737 34369474 68738948