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13280862 = 2372199227
BaseRepresentation
bin110010101010…
…011001011110
3220222201220210
4302222121132
511344441422
61152353250
7220612500
oct62523136
926881823
1013280862
117551121
124545826
13299ccca
141a99d70
15127510c
hexcaa65e

13280862 has 48 divisors (see below), whose sum is σ = 31190400. Its totient is φ = 3758832.

The previous prime is 13280831. The next prime is 13280863. The reversal of 13280862 is 26808231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58393 + ... + 58619.

It is an arithmetic number, because the mean of its divisors is an integer number (649800).

Almost surely, 213280862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13280862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15595200).

13280862 is an abundant number, since it is smaller than the sum of its proper divisors (17909538).

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

13280862 is a wasteful number, since it uses less digits than its factorization.

13280862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 13280862 is about 3644.2917007287. The cubic root of 13280862 is about 236.8147531402.

It can be divided in two parts, 132808 and 62, that added together give a triangular number (132870 = T515).

The spelling of 13280862 in words is "thirteen million, two hundred eighty thousand, eight hundred sixty-two".

Divisors: 1 2 3 6 7 14 21 42 49 98 147 199 227 294 398 454 597 681 1194 1362 1393 1589 2786 3178 4179 4767 8358 9534 9751 11123 19502 22246 29253 33369 45173 58506 66738 90346 135519 271038 316211 632422 948633 1897266 2213477 4426954 6640431 13280862