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204088457 = 297339601
BaseRepresentation
bin11000010101000…
…10010010001001
3112020000202201202
430022202102021
5404221312312
632130153545
75025503036
oct1412422211
9466022652
10204088457
11a5225751
12584228b5
1333389201
141d16838d
1512db59c2
hexc2a2489

204088457 has 8 divisors (see below), whose sum is σ = 211436040. Its totient is φ = 196761600.

The previous prime is 204088441. The next prime is 204088459. The reversal of 204088457 is 754880402.

It can be written as a sum of positive squares in 4 ways, for example, as 119006281 + 85082176 = 10909^2 + 9224^2 .

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 204088457 - 24 = 204088441 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 204088457.

It is not an unprimeable number, because it can be changed into a prime (204088459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16457 + ... + 26057.

It is an arithmetic number, because the mean of its divisors is an integer number (26429505).

Almost surely, 2204088457 is an apocalyptic number.

It is an amenable number.

204088457 is a deficient number, since it is larger than the sum of its proper divisors (7347583).

204088457 is an equidigital number, since it uses as much as digits as its factorization.

204088457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 204088457 is about 14285.9531358604. The cubic root of 204088457 is about 588.7616052755.

The spelling of 204088457 in words is "two hundred four million, eighty-eight thousand, four hundred fifty-seven".

Divisors: 1 29 733 9601 21257 278429 7037533 204088457