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12290956 = 223783047
BaseRepresentation
bin101110111000…
…101110001100
3212010110000121
4232320232030
511121302311
61115234324
7206320456
oct56705614
925113017
1012290956
116a35417
1241489a4
132714572
1418bd2d6
15112bb71
hexbb8b8c

12290956 has 12 divisors (see below), whose sum is σ = 22090768. Its totient is φ = 5979312.

The previous prime is 12290953. The next prime is 12290959. The reversal of 12290956 is 65909221.

It is an interprime number because it is at equal distance from previous prime (12290953) and next prime (12290959).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12290953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41376 + ... + 41671.

Almost surely, 212290956 is an apocalyptic number.

It is an amenable number.

12290956 is a deficient number, since it is larger than the sum of its proper divisors (9799812).

12290956 is a wasteful number, since it uses less digits than its factorization.

12290956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83088 (or 83086 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 12290956 is about 3505.8459749396. The cubic root of 12290956 is about 230.7784336273.

The spelling of 12290956 in words is "twelve million, two hundred ninety thousand, nine hundred fifty-six".

Divisors: 1 2 4 37 74 148 83047 166094 332188 3072739 6145478 12290956