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12472251 = 311675641
BaseRepresentation
bin101111100100…
…111110111011
3212110122201020
4233210332323
511143103001
61123153523
7211004151
oct57447673
925418636
1012472251
117049650
1242158a3
132778c3c
1419293d1
151165736
hexbe4fbb

12472251 has 16 divisors (see below), whose sum is σ = 18415488. Its totient is φ = 7444800.

The previous prime is 12472247. The next prime is 12472259. The reversal of 12472251 is 15227421.

It is not a de Polignac number, because 12472251 - 22 = 12472247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12472259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (1150968).

Almost surely, 212472251 is an apocalyptic number.

12472251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12472251 is a deficient number, since it is larger than the sum of its proper divisors (5943237).

12472251 is a wasteful number, since it uses less digits than its factorization.

12472251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722.

The product of its digits is 1120, while the sum is 24.

The square root of 12472251 is about 3531.6074243891. The cubic root of 12472251 is about 231.9075818481.

Adding to 12472251 its reverse (15227421), we get a palindrome (27699672).

The spelling of 12472251 in words is "twelve million, four hundred seventy-two thousand, two hundred fifty-one".

Divisors: 1 3 11 33 67 201 737 2211 5641 16923 62051 186153 377947 1133841 4157417 12472251