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78057103 = 157541919
BaseRepresentation
bin1001010011100…
…00111010001111
312102212201012211
410221300322033
5124440311403
611425011251
71635321505
oct451607217
9172781184
1078057103
1140074503
1222183b27
131322cc47
14a51c675
156cbd06d
hex4a70e8f

78057103 has 8 divisors (see below), whose sum is σ = 78785120. Its totient is φ = 77332320.

The previous prime is 78057061. The next prime is 78057107. The reversal of 78057103 is 30175087.

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 78057103 - 213 = 78048911 is a prime.

It is a super-2 number, since 2×780571032 = 12185822657505218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78057107) 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, 84478 + ... + 85396.

It is an arithmetic number, because the mean of its divisors is an integer number (9848140).

Almost surely, 278057103 is an apocalyptic number.

78057103 is a deficient number, since it is larger than the sum of its proper divisors (728017).

78057103 is a wasteful number, since it uses less digits than its factorization.

78057103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 78057103 is about 8834.9930956396. The cubic root of 78057103 is about 427.3701083895.

The spelling of 78057103 in words is "seventy-eight million, fifty-seven thousand, one hundred three".

Divisors: 1 157 541 919 84937 144283 497179 78057103