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78241105 = 5118713183
BaseRepresentation
bin1001010100111…
…01110101010001
312110020001121201
410222131311101
5130012203410
611432551201
71640016115
oct452356521
9173201551
1078241105
114018a778
1222252501
1313295917
14a569745
156d0783a
hex4a9dd51

78241105 has 8 divisors (see below), whose sum is σ = 93975552. Its totient is φ = 62535408.

The previous prime is 78241067. The next prime is 78241109. The reversal of 78241105 is 50114287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78241105 - 29 = 78240593 is a prime.

It is a super-2 number, since 2×782411052 = 12243341023242050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78241109) 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, 657 + ... + 12526.

It is an arithmetic number, because the mean of its divisors is an integer number (11746944).

Almost surely, 278241105 is an apocalyptic number.

It is an amenable number.

78241105 is a deficient number, since it is larger than the sum of its proper divisors (15734447).

78241105 is a wasteful number, since it uses less digits than its factorization.

78241105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14375.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 78241105 is about 8845.4002170620. The cubic root of 78241105 is about 427.7056543886.

The spelling of 78241105 in words is "seventy-eight million, two hundred forty-one thousand, one hundred five".

Divisors: 1 5 1187 5935 13183 65915 15648221 78241105