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78897375 = 335397241
BaseRepresentation
bin1001011001111…
…10000011011111
312111110101212000
410230332003133
5130144204000
611455013343
71645421334
oct454760337
9174411760
1078897375
1140598847
122250a253
131346554b
14a69a98b
156dd7000
hex4b3e0df

78897375 has 64 divisors (see below), whose sum is σ = 147987840. Its totient is φ = 41472000.

The previous prime is 78897359. The next prime is 78897397. The reversal of 78897375 is 57379887.

It is not a de Polignac number, because 78897375 - 24 = 78897359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327255 + ... + 327495.

It is an arithmetic number, because the mean of its divisors is an integer number (2312310).

Almost surely, 278897375 is an apocalyptic number.

78897375 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78897375 is a deficient number, since it is larger than the sum of its proper divisors (69090465).

78897375 is a wasteful number, since it uses less digits than its factorization.

78897375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 346 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 78897375 is about 8882.4194339155. The cubic root of 78897375 is about 428.8981615573.

The spelling of 78897375 in words is "seventy-eight million, eight hundred ninety-seven thousand, three hundred seventy-five".

Divisors: 1 3 5 9 15 25 27 45 75 97 125 135 225 241 291 375 485 675 723 873 1125 1205 1455 2169 2425 2619 3375 3615 4365 6025 6507 7275 10845 12125 13095 18075 21825 23377 30125 32535 36375 54225 65475 70131 90375 109125 116885 162675 210393 271125 327375 350655 584425 631179 813375 1051965 1753275 2922125 3155895 5259825 8766375 15779475 26299125 78897375