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156720108 = 22313060009
BaseRepresentation
bin10010101011101…
…01101111101100
3101220220012120110
421111311233230
5310110020413
623315020020
73612045636
oct1125655754
9356805513
10156720108
1180512156
124459a610
13266128bc
1416b57a56
15db5a8c3
hex9575bec

156720108 has 12 divisors (see below), whose sum is σ = 365680280. Its totient is φ = 52240032.

The previous prime is 156720101. The next prime is 156720149. The reversal of 156720108 is 801027651.

156720108 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1567201082 = 49122384503063328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156720101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6529993 + ... + 6530016.

Almost surely, 2156720108 is an apocalyptic number.

It is an amenable number.

156720108 is an abundant number, since it is smaller than the sum of its proper divisors (208960172).

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

156720108 is a wasteful number, since it uses less digits than its factorization.

156720108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060016 (or 13060014 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 156720108 is about 12518.7901971397. The cubic root of 156720108 is about 539.1483007354.

Adding to 156720108 its reverse (801027651), we get a palindrome (957747759).

The spelling of 156720108 in words is "one hundred fifty-six million, seven hundred twenty thousand, one hundred eight".