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78000041 = 719935591
BaseRepresentation
bin1001010011000…
…10111110101001
312102202210221102
410221202332221
5124432000131
611423451145
71634663240
oct451427651
9172683842
1078000041
1140035649
1222156ab5
131320cc92
14a505957
156cab1cb
hex4a62fa9

78000041 has 8 divisors (see below), whose sum is σ = 89203584. Its totient is φ = 66811680.

The previous prime is 78000037. The next prime is 78000049. The reversal of 78000041 is 14000087.

It is a happy number.

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 78000041 - 22 = 78000037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77999977 and 78000022.

It is not an unprimeable number, because it can be changed into a prime (78000049) 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, 11156 + ... + 16746.

It is an arithmetic number, because the mean of its divisors is an integer number (11150448).

Almost surely, 278000041 is an apocalyptic number.

It is an amenable number.

78000041 is a deficient number, since it is larger than the sum of its proper divisors (11203543).

78000041 is a wasteful number, since it uses less digits than its factorization.

78000041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7591.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 78000041 is about 8831.7631874955. The cubic root of 78000041 is about 427.2659430326.

The spelling of 78000041 in words is "seventy-eight million, forty-one", and thus it is an aban number and an uban number.

Divisors: 1 7 1993 5591 13951 39137 11142863 78000041