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308084428 = 22251306857
BaseRepresentation
bin10010010111001…
…111111011001100
3210110201022101101
4102113033323030
51112332200203
650323152444
710430450221
oct2227177314
9713638341
10308084428
111489a6433
1287215724
134ba9b7a2
142ccb9948
151c0a941d
hex125cfecc

308084428 has 12 divisors (see below), whose sum is σ = 541297512. Its totient is φ = 153428000.

The previous prime is 308084419. The next prime is 308084431. The reversal of 308084428 is 824480803.

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 3 ways as a sum of consecutive naturals, for example, 152425 + ... + 154432.

It is an arithmetic number, because the mean of its divisors is an integer number (45108126).

Almost surely, 2308084428 is an apocalyptic number.

It is an amenable number.

308084428 is a deficient number, since it is larger than the sum of its proper divisors (233213084).

308084428 is a wasteful number, since it uses less digits than its factorization.

308084428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307112 (or 307110 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 308084428 is about 17552.3339758563. Note that the first 3 decimals coincide. The cubic root of 308084428 is about 675.3930426061.

The spelling of 308084428 in words is "three hundred eight million, eighty-four thousand, four hundred twenty-eight".

Divisors: 1 2 4 251 502 1004 306857 613714 1227428 77021107 154042214 308084428