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12872090 = 2571173229
BaseRepresentation
bin110001000110…
…100110011010
3220012222012002
4301012212122
511243401330
61135521002
7214260650
oct61064632
926188162
1012872090
1172a1aa0
124389162
132888c2a
1419d0dd0
1511e3e45
hexc4699a

12872090 has 64 divisors (see below), whose sum is σ = 29410560. Its totient is φ = 3939840.

The previous prime is 12872081. The next prime is 12872117. The reversal of 12872090 is 9027821.

It is a happy number.

12872090 is nontrivially palindromic in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56096 + ... + 56324.

It is an arithmetic number, because the mean of its divisors is an integer number (459540).

Almost surely, 212872090 is an apocalyptic number.

12872090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12872090 is an abundant number, since it is smaller than the sum of its proper divisors (16538470).

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

12872090 is a wasteful number, since it uses less digits than its factorization.

12872090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 12872090 is about 3587.7695020723. The cubic root of 12872090 is about 234.3597481038.

The spelling of 12872090 in words is "twelve million, eight hundred seventy-two thousand, ninety".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 73 77 110 146 154 229 365 385 458 511 730 770 803 1022 1145 1603 1606 2290 2519 2555 3206 4015 5038 5110 5621 8015 8030 11242 12595 16030 16717 17633 25190 28105 33434 35266 56210 83585 88165 117019 167170 176330 183887 234038 367774 585095 919435 1170190 1287209 1838870 2574418 6436045 12872090