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67698248 = 2329092
BaseRepresentation
bin1000000100011…
…11111001001000
311201101102112112
410002033321020
5114312320443
610415001452
71451265662
oct402177110
9151342475
1067698248
1135239772
121a809288
1311043c47
148dc3532
155e23b18
hex408fe48

67698248 has 12 divisors (see below), whose sum is σ = 126977865. Its totient is φ = 33837488.

The previous prime is 67698247. The next prime is 67698259. The reversal of 67698248 is 84289676.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 56821444 + 10876804 = 7538^2 + 3298^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=5818.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67698196 and 67698205.

It is not an unprimeable number, because it can be changed into a prime (67698247) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 21818 + ... + 24726.

Almost surely, 267698248 is an apocalyptic number.

It is an amenable number.

67698248 is a deficient number, since it is larger than the sum of its proper divisors (59279617).

67698248 is an frugal number, since it uses more digits than its factorization.

67698248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5824 (or 2911 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 67698248 is about 8227.8945058867. The cubic root of 67698248 is about 407.5608661137.

Multiplying 67698248 by its sum of digits (50), we get a square (3384912400 = 581802).

The spelling of 67698248 in words is "sixty-seven million, six hundred ninety-eight thousand, two hundred forty-eight".

Divisors: 1 2 4 8 2909 5818 11636 23272 8462281 16924562 33849124 67698248