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308136528 = 243371931173
BaseRepresentation
bin10010010111011…
…100101001010000
3210110210221212000
4102113130221100
51112340332103
650324234000
710431055140
oct2227345120
9713727760
10308136528
11148a31597
128723b900
134bab940b
142ccd0920
151c0b9aa3
hex125dca50

308136528 has 320 divisors, whose sum is σ = 1104691200. Its totient is φ = 80248320.

The previous prime is 308136523. The next prime is 308136539. The reversal of 308136528 is 825631803.

308136528 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 308136492 and 308136501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308136523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1781050 + ... + 1781222.

It is an arithmetic number, because the mean of its divisors is an integer number (3452160).

Almost surely, 2308136528 is an apocalyptic number.

308136528 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308136528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552345600).

308136528 is an abundant number, since it is smaller than the sum of its proper divisors (796554672).

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

308136528 is a wasteful number, since it uses less digits than its factorization.

308136528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 308136528 is about 17553.8180462257. The cubic root of 308136528 is about 675.4311122509.

The spelling of 308136528 in words is "three hundred eight million, one hundred thirty-six thousand, five hundred twenty-eight".