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136232840 = 23510133721
BaseRepresentation
bin10000001111010…
…11111110001000
3100111100100022202
420013223332020
5234333422330
621303535332
73242650202
oct1007537610
9314310282
10136232840
116a999827
123975a548
13222bb763
1414143772
15be60445
hex81ebf88

136232840 has 32 divisors (see below), whose sum is σ = 309567960. Its totient is φ = 53952000.

The previous prime is 136232827. The next prime is 136232861. The reversal of 136232840 is 48232631.

136232840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 106048804 + 30184036 = 10298^2 + 5494^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12821 + ... + 20900.

Almost surely, 2136232840 is an apocalyptic number.

136232840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136232840 is an abundant number, since it is smaller than the sum of its proper divisors (173335120).

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

136232840 is a wasteful number, since it uses less digits than its factorization.

136232840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33833 (or 33829 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 136232840 is about 11671.8824531435. The cubic root of 136232840 is about 514.5496298287.

The spelling of 136232840 in words is "one hundred thirty-six million, two hundred thirty-two thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 20 40 101 202 404 505 808 1010 2020 4040 33721 67442 134884 168605 269768 337210 674420 1348840 3405821 6811642 13623284 17029105 27246568 34058210 68116420 136232840