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627888385 = 5239375827
BaseRepresentation
bin100101011011001…
…101000100000001
31121202111000221101
4211123031010001
52241214412020
6142145454401
721362651245
oct4533150401
91552430841
10627888385
112a2476923
12156341401
13a01116b7
145d566425
153a1cb00a
hex256cd101

627888385 has 16 divisors (see below), whose sum is σ = 787199616. Its totient is φ = 479875968.

The previous prime is 627888377. The next prime is 627888413. The reversal of 627888385 is 583888726.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 627888385 - 23 = 627888377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104842 + ... + 110668.

It is an arithmetic number, because the mean of its divisors is an integer number (49199976).

Almost surely, 2627888385 is an apocalyptic number.

It is an amenable number.

627888385 is a deficient number, since it is larger than the sum of its proper divisors (159311231).

627888385 is a wasteful number, since it uses less digits than its factorization.

627888385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792.

The product of its digits is 5160960, while the sum is 55.

The square root of 627888385 is about 25057.7011116343. The cubic root of 627888385 is about 856.3030346322.

The spelling of 627888385 in words is "six hundred twenty-seven million, eight hundred eighty-eight thousand, three hundred eighty-five".

Divisors: 1 5 23 115 937 4685 5827 21551 29135 107755 134021 670105 5459899 27299495 125577677 627888385