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13044880 = 245163061
BaseRepresentation
bin110001110000…
…110010010000
3220112202012201
4301300302100
511314414010
61143332544
7215610502
oct61606220
926482181
1013044880
1173aa8a2
124451154
132919784
141a37d72
15122a23a
hexc70c90

13044880 has 20 divisors (see below), whose sum is σ = 30329532. Its totient is φ = 5217920.

The previous prime is 13044853. The next prime is 13044883. The reversal of 13044880 is 8844031.

It can be written as a sum of positive squares in 2 ways, for example, as 1430416 + 11614464 = 1196^2 + 3408^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (13044883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81451 + ... + 81610.

Almost surely, 213044880 is an apocalyptic number.

13044880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13044880 is an abundant number, since it is smaller than the sum of its proper divisors (17284652).

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

13044880 is a wasteful number, since it uses less digits than its factorization.

13044880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163074 (or 163068 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 13044880 is about 3611.7696493547. The cubic root of 13044880 is about 235.4037423487.

It can be divided in two parts, 13044 and 880, that added together give a square (13924 = 1182).

The spelling of 13044880 in words is "thirteen million, forty-four thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 163061 326122 652244 815305 1304488 1630610 2608976 3261220 6522440 13044880