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12260815390 = 252353307893
BaseRepresentation
bin10110110101100110…
…10011001000011110
31011122110212221210201
423122303103020132
5200102232043030
65344343454114
7612556132315
oct133263231036
934573787721
1012260815390
115221a0208a
12246215733a
1312051c2c65
1484451127c
154bb5de2ca
hex2dacd321e

12260815390 has 16 divisors (see below), whose sum is σ = 23029010208. Its totient is φ = 4691094496.

The previous prime is 12260815339. The next prime is 12260815397. The reversal of 12260815390 is 9351806221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12260815397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26653717 + ... + 26654176.

It is an arithmetic number, because the mean of its divisors is an integer number (1439313138).

Almost surely, 212260815390 is an apocalyptic number.

12260815390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12260815390 is a deficient number, since it is larger than the sum of its proper divisors (10768194818).

12260815390 is a wasteful number, since it uses less digits than its factorization.

12260815390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53307923.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 12260815390 in words is "twelve billion, two hundred sixty million, eight hundred fifteen thousand, three hundred ninety".

Divisors: 1 2 5 10 23 46 115 230 53307893 106615786 266539465 533078930 1226081539 2452163078 6130407695 12260815390