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12619980 = 2232570111
BaseRepresentation
bin110000001001…
…000011001100
3212202011100200
4300021003030
511212314410
61130253500
7212160642
oct60110314
925664320
1012619980
11713a63a
124287290
1327cb259
141967192
1511943c0
hexc090cc

12619980 has 36 divisors (see below), whose sum is σ = 38281152. Its totient is φ = 3365280.

The previous prime is 12619973. The next prime is 12619987. The reversal of 12619980 is 8991621.

It is an interprime number because it is at equal distance from previous prime (12619973) and next prime (12619987).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12619987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34876 + ... + 35235.

Almost surely, 212619980 is an apocalyptic number.

12619980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12619980 is an abundant number, since it is smaller than the sum of its proper divisors (25661172).

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

12619980 is a wasteful number, since it uses less digits than its factorization.

12619980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70126 (or 70121 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12619980 is about 3552.4611187176. The cubic root of 12619980 is about 232.8196090047.

The spelling of 12619980 in words is "twelve million, six hundred nineteen thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 70111 140222 210333 280444 350555 420666 630999 701110 841332 1051665 1261998 1402220 2103330 2523996 3154995 4206660 6309990 12619980