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13012944 = 243738729
BaseRepresentation
bin110001101000…
…111111010000
3220111010101220
4301220333100
511312403234
61142525040
7215415420
oct61507720
926433356
1013012944
1173888aa
124436780
132908089
141a2a480
151220a49
hexc68fd0

13012944 has 40 divisors (see below), whose sum is σ = 38420160. Its totient is φ = 3717888.

The previous prime is 13012943. The next prime is 13012969. The reversal of 13012944 is 44921031.

13012944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19029 + ... + 19700.

It is an arithmetic number, because the mean of its divisors is an integer number (960504).

Almost surely, 213012944 is an apocalyptic number.

13012944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13012944 is an abundant number, since it is smaller than the sum of its proper divisors (25407216).

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

13012944 is a wasteful number, since it uses less digits than its factorization.

13012944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38747 (or 38741 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 13012944 is about 3607.3458387019. The cubic root of 13012944 is about 235.2114830804.

Adding to 13012944 its reverse (44921031), we get a palindrome (57933975).

The spelling of 13012944 in words is "thirteen million, twelve thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 38729 77458 116187 154916 232374 271103 309832 464748 542206 619664 813309 929496 1084412 1626618 1858992 2168824 3253236 4337648 6506472 13012944