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12872190 = 2352771549
BaseRepresentation
bin110001000110…
…100111111110
3220012222022210
4301012213332
511243402230
61135521250
7214261152
oct61064776
926188283
1012872190
1172a2081
124389226
132888ca6
1419d1062
1511e3eb0
hexc469fe

12872190 has 32 divisors (see below), whose sum is σ = 31024800. Its totient is φ = 3417984.

The previous prime is 12872183. The next prime is 12872227. The reversal of 12872190 is 9127821.

It is a super-2 number, since 2×128721902 = 331386550792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7536 + ... + 9084.

It is an arithmetic number, because the mean of its divisors is an integer number (969525).

Almost surely, 212872190 is an apocalyptic number.

12872190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12872190 is an abundant number, since it is smaller than the sum of its proper divisors (18152610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12872190 is a wasteful number, since it uses less digits than its factorization.

12872190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12872190 is about 3587.7834382805. The cubic root of 12872190 is about 234.3603549960.

The spelling of 12872190 in words is "twelve million, eight hundred seventy-two thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 277 554 831 1385 1549 1662 2770 3098 4155 4647 7745 8310 9294 15490 23235 46470 429073 858146 1287219 2145365 2574438 4290730 6436095 12872190