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13012280 = 235325307
BaseRepresentation
bin110001101000…
…110100111000
3220111002111022
4301220310320
511312343110
61142522012
7215413451
oct61506470
926432438
1013012280
117388356
124436308
132907998
141a2a128
151220755
hexc68d38

13012280 has 16 divisors (see below), whose sum is σ = 29277720. Its totient is φ = 5204896.

The previous prime is 13012261. The next prime is 13012291. The reversal of 13012280 is 8221031.

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 3 ways as a sum of consecutive naturals, for example, 162614 + ... + 162693.

Almost surely, 213012280 is an apocalyptic number.

13012280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012280 is an abundant number, since it is smaller than the sum of its proper divisors (16265440).

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

13012280 is a wasteful number, since it uses less digits than its factorization.

13012280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325318 (or 325314 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 13012280 is about 3607.2538031029. The cubic root of 13012280 is about 235.2074823695.

The spelling of 13012280 in words is "thirteen million, twelve thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 325307 650614 1301228 1626535 2602456 3253070 6506140 13012280