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308527045 = 5531164253
BaseRepresentation
bin10010011000111…
…011111111000101
3210111112210112121
4102120323333011
51112440331140
650340445541
710434302521
oct2230737705
9714483477
10308527045
11149178a32
12873a98b1
134bbc50a8
142cd92d81
151c14564a
hex1263bfc5

308527045 has 8 divisors (see below), whose sum is σ = 377218296. Its totient is φ = 242164416.

The previous prime is 308527003. The next prime is 308527061. The reversal of 308527045 is 540725803.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27394756 + 281132289 = 5234^2 + 16767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 308527045 - 223 = 300138437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 308527045.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 581862 + ... + 582391.

It is an arithmetic number, because the mean of its divisors is an integer number (47152287).

Almost surely, 2308527045 is an apocalyptic number.

It is an amenable number.

308527045 is a deficient number, since it is larger than the sum of its proper divisors (68691251).

308527045 is a wasteful number, since it uses less digits than its factorization.

308527045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164311.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 308527045 is about 17564.9379446669. The cubic root of 308527045 is about 675.7163277939.

The spelling of 308527045 in words is "three hundred eight million, five hundred twenty-seven thousand, forty-five".

Divisors: 1 5 53 265 1164253 5821265 61705409 308527045