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12742808 = 2313122527
BaseRepresentation
bin110000100111…
…000010011000
3212222101211212
4300213002120
511230232213
61133042252
7213212021
oct60470230
925871755
1012742808
117213951
124326388
132842130
141999c48
1511ba9a8
hexc27098

12742808 has 16 divisors (see below), whose sum is σ = 25730880. Its totient is φ = 5881248.

The previous prime is 12742801. The next prime is 12742811. The reversal of 12742808 is 80824721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12742801) 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, 61160 + ... + 61367.

It is an arithmetic number, because the mean of its divisors is an integer number (1608180).

Almost surely, 212742808 is an apocalyptic number.

It is an amenable number.

12742808 is an abundant number, since it is smaller than the sum of its proper divisors (12988072).

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

12742808 is a wasteful number, since it uses less digits than its factorization.

12742808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122546 (or 122542 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 12742808 is about 3569.7069907767. The cubic root of 12742808 is about 233.5725021583.

The spelling of 12742808 in words is "twelve million, seven hundred forty-two thousand, eight hundred eight".

Divisors: 1 2 4 8 13 26 52 104 122527 245054 490108 980216 1592851 3185702 6371404 12742808