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12899960 = 235521619
BaseRepresentation
bin110001001101…
…011001111000
3220021101102022
4301031121320
511300244320
61140254012
7214435133
oct61153170
926241368
1012899960
117310a27
1243a1308
132898818
1419db21a
1511ec325
hexc4d678

12899960 has 32 divisors (see below), whose sum is σ = 29127600. Its totient is φ = 5141760.

The previous prime is 12899959. The next prime is 12899977. The reversal of 12899960 is 6999821.

12899960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20531 + ... + 21149.

Almost surely, 212899960 is an apocalyptic number.

12899960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12899960 is an abundant number, since it is smaller than the sum of its proper divisors (16227640).

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

12899960 is a wasteful number, since it uses less digits than its factorization.

12899960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 12899960 is about 3591.6514307488. The cubic root of 12899960 is about 234.5287674802.

The spelling of 12899960 in words is "twelve million, eight hundred ninety-nine thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 521 619 1042 1238 2084 2476 2605 3095 4168 4952 5210 6190 10420 12380 20840 24760 322499 644998 1289996 1612495 2579992 3224990 6449980 12899960