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78081027 = 3101325693
BaseRepresentation
bin1001010011101…
…10110000000011
312102220221000220
410221312300003
5124442043102
611425314123
71635451323
oct451666003
9172827026
1078081027
1140090482
1222195943
131323aabb
14a527283
156cc51bc
hex4a76c03

78081027 has 8 divisors (see below), whose sum is σ = 104214864. Its totient is φ = 52000608.

The previous prime is 78081011. The next prime is 78081049. The reversal of 78081027 is 72018087.

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

It is not a de Polignac number, because 78081027 - 24 = 78081011 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (78011027) 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, 9808 + ... + 15885.

It is an arithmetic number, because the mean of its divisors is an integer number (13026858).

Almost surely, 278081027 is an apocalyptic number.

78081027 is a deficient number, since it is larger than the sum of its proper divisors (26133837).

78081027 is a wasteful number, since it uses less digits than its factorization.

78081027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26709.

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 78081027 is about 8836.3469261907. The cubic root of 78081027 is about 427.4137659926.

The spelling of 78081027 in words is "seventy-eight million, eighty-one thousand, twenty-seven".

Divisors: 1 3 1013 3039 25693 77079 26027009 78081027