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13162780 = 225658139
BaseRepresentation
bin110010001101…
…100100011100
3220202201221101
4302031210130
511332202110
61150042444
7216611311
oct62154434
926681841
1013162780
117480434
1244a9424
13295b337
141a68d08
15125013a
hexc8d91c

13162780 has 12 divisors (see below), whose sum is σ = 27641880. Its totient is φ = 5265104.

The previous prime is 13162771. The next prime is 13162783. The reversal of 13162780 is 8726131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13162783) by changing a digit.

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, 329050 + ... + 329089.

It is an arithmetic number, because the mean of its divisors is an integer number (2303490).

Almost surely, 213162780 is an apocalyptic number.

13162780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13162780 is an abundant number, since it is smaller than the sum of its proper divisors (14479100).

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

13162780 is a wasteful number, since it uses less digits than its factorization.

13162780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658148 (or 658146 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13162780 is about 3628.0545751132. The cubic root of 13162780 is about 236.1108116977.

It can be divided in two parts, 1316 and 2780, that added together give a 12-th power (4096 = 212).

The spelling of 13162780 in words is "thirteen million, one hundred sixty-two thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 658139 1316278 2632556 3290695 6581390 13162780