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13142620 = 225657131
BaseRepresentation
bin110010001000…
…101001011100
3220201201021201
4302020221130
511331030440
61145405244
7216465451
oct62105134
926651251
1013142620
117467277
124499824
1329520ca
141a61828
15124919a
hexc88a5c

13142620 has 12 divisors (see below), whose sum is σ = 27599544. Its totient is φ = 5257040.

The previous prime is 13142617. The next prime is 13142621. The reversal of 13142620 is 2624131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142621) 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, 328546 + ... + 328585.

It is an arithmetic number, because the mean of its divisors is an integer number (2299962).

Almost surely, 213142620 is an apocalyptic number.

13142620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13142620 is an abundant number, since it is smaller than the sum of its proper divisors (14456924).

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

13142620 is a wasteful number, since it uses less digits than its factorization.

13142620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657140 (or 657138 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 13142620 is about 3625.2751619705. The cubic root of 13142620 is about 235.9902083460.

Adding to 13142620 its reverse (2624131), we get a palindrome (15766751).

The spelling of 13142620 in words is "thirteen million, one hundred forty-two thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 657131 1314262 2628524 3285655 6571310 13142620