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12690722 = 21122292
BaseRepresentation
bin110000011010…
…010100100010
3212212202101202
4300122110202
511222100342
61132001202
7212604122
oct60322442
925782352
1012690722
117188800
124300202
132824505
141984c82
1511aa332
hexc1a522

12690722 has 18 divisors (see below), whose sum is σ = 21015729. Its totient is φ = 5743320.

The previous prime is 12690697. The next prime is 12690731. The reversal of 12690722 is 22709621.

It can be written as a sum of positive squares in 2 ways, for example, as 9554281 + 3136441 = 3091^2 + 1771^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=2519.

It is a super-2 number, since 2×126907222 = 322108849762568, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 55304 + ... + 55532.

Almost surely, 212690722 is an apocalyptic number.

12690722 is a deficient number, since it is larger than the sum of its proper divisors (8325007).

12690722 is an equidigital number, since it uses as much as digits as its factorization.

12690722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 12690722 is about 3562.4039636178. The cubic root of 12690722 is about 233.2538264263.

The spelling of 12690722 in words is "twelve million, six hundred ninety thousand, seven hundred twenty-two".

Divisors: 1 2 11 22 121 229 242 458 2519 5038 27709 52441 55418 104882 576851 1153702 6345361 12690722