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388458041 = 1753431141
BaseRepresentation
bin10111001001110…
…110011000111001
31000001221201020212
4113021312120321
51243421124131
6102314000505
712424560506
oct2711663071
91001851225
10388458041
1118a302304
12aa116135
136262cc3a
143983c4ad
1524183a2b
hex17276639

388458041 has 8 divisors (see below), whose sum is σ = 419070024. Its totient is φ = 358708480.

The previous prime is 388458029. The next prime is 388458071. The reversal of 388458041 is 140854883.

It can be written as a sum of positive squares in 4 ways, for example, as 266995600 + 121462441 = 16340^2 + 11021^2 .

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 388458041 - 26 = 388457977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 388458041.

It is not an unprimeable number, because it can be changed into a prime (388458071) 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, 214670 + ... + 216471.

It is an arithmetic number, because the mean of its divisors is an integer number (52383753).

Almost surely, 2388458041 is an apocalyptic number.

It is an amenable number.

388458041 is a deficient number, since it is larger than the sum of its proper divisors (30611983).

388458041 is a wasteful number, since it uses less digits than its factorization.

388458041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431211.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 388458041 is about 19709.3389285384. The cubic root of 388458041 is about 729.6501989571.

The spelling of 388458041 in words is "three hundred eighty-eight million, four hundred fifty-eight thousand, forty-one".

Divisors: 1 17 53 901 431141 7329397 22850473 388458041