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12472305 = 351759829
BaseRepresentation
bin101111100100…
…111111110001
3212110122210020
4233210333301
511143103210
61123154053
7211004256
oct57447761
925418706
1012472305
11704969a
124215929
132778c81
14192942d
151165770
hexbe4ff1

12472305 has 32 divisors (see below), whose sum is σ = 21513600. Its totient is φ = 6147072.

The previous prime is 12472301. The next prime is 12472319. The reversal of 12472305 is 50327421.

It is not a de Polignac number, because 12472305 - 22 = 12472301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12472301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14631 + ... + 15459.

It is an arithmetic number, because the mean of its divisors is an integer number (672300).

Almost surely, 212472305 is an apocalyptic number.

12472305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12472305 is a deficient number, since it is larger than the sum of its proper divisors (9041295).

12472305 is a wasteful number, since it uses less digits than its factorization.

12472305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 12472305 is about 3531.6150696247. The cubic root of 12472305 is about 231.9079165375.

Adding to 12472305 its reverse (50327421), we get a palindrome (62799726).

The spelling of 12472305 in words is "twelve million, four hundred seventy-two thousand, three hundred five".

Divisors: 1 3 5 15 17 51 59 85 177 255 295 829 885 1003 2487 3009 4145 5015 12435 14093 15045 42279 48911 70465 146733 211395 244555 733665 831487 2494461 4157435 12472305