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12993190 = 257419443
BaseRepresentation
bin110001100100…
…001010100110
3220110010022021
4301210022212
511311240230
61142253354
7215304010
oct61441246
926403267
1012993190
117374a81
12442725a
1328cc0a2
141a231b0
151219c7a
hexc642a6

12993190 has 32 divisors (see below), whose sum is σ = 26853120. Its totient is φ = 4434144.

The previous prime is 12993173. The next prime is 12993191. The reversal of 12993190 is 9139921.

It is a super-2 number, since 2×129931902 = 337645972752200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29109 + ... + 29551.

It is an arithmetic number, because the mean of its divisors is an integer number (839160).

Almost surely, 212993190 is an apocalyptic number.

12993190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12993190 is an abundant number, since it is smaller than the sum of its proper divisors (13859930).

12993190 is a wasteful number, since it uses less digits than its factorization.

12993190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 12993190 is about 3604.6067746704. The cubic root of 12993190 is about 235.0924036796.

Subtracting from 12993190 its product of nonzero digits (4374), we obtain a square (12988816 = 36042).

It can be divided in two parts, 1299 and 3190, that added together give a square (4489 = 672).

The spelling of 12993190 in words is "twelve million, nine hundred ninety-three thousand, one hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 419 443 838 886 2095 2215 2933 3101 4190 4430 5866 6202 14665 15505 29330 31010 185617 371234 928085 1299319 1856170 2598638 6496595 12993190