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12491230 = 251996277
BaseRepresentation
bin101111101001…
…100111011110
3212111121202011
4233221213132
511144204410
61123421434
7211113403
oct57514736
925447664
1012491230
117061934
12422487a
13278477b
1419322aa
15116b18a
hexbe99de

12491230 has 16 divisors (see below), whose sum is σ = 22600800. Its totient is φ = 4970592.

The previous prime is 12491201. The next prime is 12491273. The reversal of 12491230 is 3219421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (1412550).

Almost surely, 212491230 is an apocalyptic number.

12491230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12491230 is a deficient number, since it is larger than the sum of its proper divisors (10109570).

12491230 is a wasteful number, since it uses less digits than its factorization.

12491230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12491230 is about 3534.2934230197. The cubic root of 12491230 is about 232.0251533370.

It can be divided in two parts, 12491 and 230, that added together give a palindrome (12721).

The spelling of 12491230 in words is "twelve million, four hundred ninety-one thousand, two hundred thirty".

Divisors: 1 2 5 10 199 398 995 1990 6277 12554 31385 62770 1249123 2498246 6245615 12491230