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78082753 = 730673637
BaseRepresentation
bin1001010011101…
…11001011000001
312102221000101211
410221313023001
5124442122003
611425330121
71635456340
oct451671301
9172830354
1078082753
1140091801
1222196941
131323b818
14a527b57
156cc596d
hex4a772c1

78082753 has 8 divisors (see below), whose sum is σ = 89291072. Its totient is φ = 66887856.

The previous prime is 78082733. The next prime is 78082757. The reversal of 78082753 is 35728087.

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

It is not a de Polignac number, because 78082753 - 213 = 78074561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78082757) 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, 19651 + ... + 23287.

It is an arithmetic number, because the mean of its divisors is an integer number (11161384).

Almost surely, 278082753 is an apocalyptic number.

It is an amenable number.

78082753 is a deficient number, since it is larger than the sum of its proper divisors (11208319).

78082753 is a wasteful number, since it uses less digits than its factorization.

78082753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 78082753 is about 8836.4445904447. Note that the first 3 decimals coincide. The cubic root of 78082753 is about 427.4169153310.

The spelling of 78082753 in words is "seventy-eight million, eighty-two thousand, seven hundred fifty-three".

Divisors: 1 7 3067 3637 21469 25459 11154679 78082753