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13103770 = 251777081
BaseRepresentation
bin110001111111…
…001010011010
3220122201222211
4301333022122
511323310040
61144505334
7216244261
oct61771232
926581884
1013103770
117440069
12447b24a
13293a514
141a515d8
15123c8ea
hexc7f29a

13103770 has 16 divisors (see below), whose sum is σ = 24974568. Its totient is φ = 4933120.

The previous prime is 13103759. The next prime is 13103771. The reversal of 13103770 is 7730131.

It can be written as a sum of positive squares in 4 ways, for example, as 12020089 + 1083681 = 3467^2 + 1041^2 .

It is not an unprimeable number, because it can be changed into a prime (13103771) 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, 38371 + ... + 38710.

Almost surely, 213103770 is an apocalyptic number.

13103770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13103770 is a deficient number, since it is larger than the sum of its proper divisors (11870798).

13103770 is a wasteful number, since it uses less digits than its factorization.

13103770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77105.

The product of its (nonzero) digits is 441, while the sum is 22.

The square root of 13103770 is about 3619.9129823795. The cubic root of 13103770 is about 235.7574473413.

The spelling of 13103770 in words is "thirteen million, one hundred three thousand, seven hundred seventy".

Divisors: 1 2 5 10 17 34 85 170 77081 154162 385405 770810 1310377 2620754 6551885 13103770