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78269083 = 835571693
BaseRepresentation
bin1001010101001…
…00101010011011
312110021110222221
410222210222123
5130014102313
611433324511
71640163514
oct452445233
9173243887
1078269083
11401a97a2
1222266737
13132a5589
14a575a0b
156d10c8d
hex4aa4a9b

78269083 has 8 divisors (see below), whose sum is σ = 79401168. Its totient is φ = 77141664.

The previous prime is 78269033. The next prime is 78269089. The reversal of 78269083 is 38096287.

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 78269083 - 29 = 78268571 is a prime.

It is a super-2 number, since 2×782690832 = 12252098707321778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78269089) 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, 45385 + ... + 47077.

It is an arithmetic number, because the mean of its divisors is an integer number (9925146).

Almost surely, 278269083 is an apocalyptic number.

78269083 is a deficient number, since it is larger than the sum of its proper divisors (1132085).

78269083 is a wasteful number, since it uses less digits than its factorization.

78269083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 78269083 is about 8846.9815756562. The cubic root of 78269083 is about 427.7566289701.

The spelling of 78269083 in words is "seventy-eight million, two hundred sixty-nine thousand, eighty-three".

Divisors: 1 83 557 1693 46231 140519 943001 78269083