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78263141 = 1129245339
BaseRepresentation
bin1001010101000…
…11001101100101
312110021011211212
410222203031211
5130013410031
611433241205
71640140265
oct452431545
9173234755
1078263141
11401a5290
1222263205
13132a2968
14a5737a5
156d0e12b
hex4aa3365

78263141 has 8 divisors (see below), whose sum is σ = 88322400. Its totient is φ = 68694640.

The previous prime is 78263113. The next prime is 78263153. The reversal of 78263141 is 14136287.

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 78263141 - 218 = 78000997 is a prime.

It is a super-2 number, since 2×782631412 = 12250238478371762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78263098 and 78263107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78263111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 122351 + ... + 122988.

It is an arithmetic number, because the mean of its divisors is an integer number (11040300).

Almost surely, 278263141 is an apocalyptic number.

It is an amenable number.

78263141 is a deficient number, since it is larger than the sum of its proper divisors (10059259).

78263141 is a wasteful number, since it uses less digits than its factorization.

78263141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245379.

The product of its digits is 8064, while the sum is 32.

The square root of 78263141 is about 8846.6457485309. The cubic root of 78263141 is about 427.7458039457.

The spelling of 78263141 in words is "seventy-eight million, two hundred sixty-three thousand, one hundred forty-one".

Divisors: 1 11 29 319 245339 2698729 7114831 78263141