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12880494 = 2321165053
BaseRepresentation
bin110001001000…
…101001101110
3220020101201100
4301020221232
511244133434
61140023530
7214324314
oct61105156
926211640
1012880494
1172a8340
124391ba6
13288c9c3
1419d40b4
1511e6699
hexc48a6e

12880494 has 24 divisors (see below), whose sum is σ = 30445272. Its totient is φ = 3903120.

The previous prime is 12880487. The next prime is 12880501. The reversal of 12880494 is 49408821.

It is an interprime number because it is at equal distance from previous prime (12880487) and next prime (12880501).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32329 + ... + 32724.

It is an arithmetic number, because the mean of its divisors is an integer number (1268553).

Almost surely, 212880494 is an apocalyptic number.

12880494 is an abundant number, since it is smaller than the sum of its proper divisors (17564778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12880494 is a wasteful number, since it uses less digits than its factorization.

12880494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65072 (or 65069 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 12880494 is about 3588.9405121846. The cubic root of 12880494 is about 234.4107403629.

The spelling of 12880494 in words is "twelve million, eight hundred eighty thousand, four hundred ninety-four".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 65053 130106 195159 390318 585477 715583 1170954 1431166 2146749 4293498 6440247 12880494