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12880844 = 223220211
BaseRepresentation
bin110001001000…
…101111001100
3220020102012022
4301020233030
511244141334
61140025312
7214325324
oct61105714
926212168
1012880844
1172a8629
124392238
13288cc02
1419d4284
1511e682e
hexc48bcc

12880844 has 6 divisors (see below), whose sum is σ = 22541484. Its totient is φ = 6440420.

The previous prime is 12880831. The next prime is 12880859. The reversal of 12880844 is 44808821.

It is a super-2 number, since 2×128808442 = 331832284304672, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1610102 + ... + 1610109.

It is an arithmetic number, because the mean of its divisors is an integer number (3756914).

Almost surely, 212880844 is an apocalyptic number.

It is an amenable number.

12880844 is a deficient number, since it is larger than the sum of its proper divisors (9660640).

12880844 is a wasteful number, since it uses less digits than its factorization.

12880844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220215 (or 3220213 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 12880844 is about 3588.9892727619. The cubic root of 12880844 is about 234.4128635480.

The spelling of 12880844 in words is "twelve million, eight hundred eighty thousand, eight hundred forty-four".

Divisors: 1 2 4 3220211 6440422 12880844