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13012120 = 2351129573
BaseRepresentation
bin110001101000…
…110010011000
3220111002021101
4301220302120
511312341440
61142521144
7215413132
oct61506230
926432241
1013012120
117388220
1244361b4
1329078a4
141a2a052
15122069a
hexc68c98

13012120 has 32 divisors (see below), whose sum is σ = 31939920. Its totient is φ = 4731520.

The previous prime is 13012117. The next prime is 13012141. The reversal of 13012120 is 2121031.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 13012097 and 13012106.

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, 14347 + ... + 15226.

Almost surely, 213012120 is an apocalyptic number.

13012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012120 is an abundant number, since it is smaller than the sum of its proper divisors (18927800).

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

13012120 is a wasteful number, since it uses less digits than its factorization.

13012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29595 (or 29591 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 13012120 is about 3607.2316254990. The cubic root of 13012120 is about 235.2065183224.

Adding to 13012120 its reverse (2121031), we get a palindrome (15133151).

The spelling of 13012120 in words is "thirteen million, twelve thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 29573 59146 118292 147865 236584 295730 325303 591460 650606 1182920 1301212 1626515 2602424 3253030 6506060 13012120