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388873057 = 1975127253
BaseRepresentation
bin10111001011011…
…011101101100001
31000002201210112211
4113023123231201
51244022414212
6102330522121
712431236456
oct2713335541
91002653484
10388873057
1118a5660a1
12aa296341
1362746b01
143990982d
15242169a7
hex172dbb61

388873057 has 8 divisors (see below), whose sum is σ = 409900160. Its totient is φ = 367902000.

The previous prime is 388873049. The next prime is 388873061. The reversal of 388873057 is 750378883.

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 388873057 - 23 = 388873049 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 388873057.

It is not an unprimeable number, because it can be changed into a prime (388873007) by changing a digit.

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, 643 + ... + 27895.

It is an arithmetic number, because the mean of its divisors is an integer number (51237520).

Almost surely, 2388873057 is an apocalyptic number.

It is an amenable number.

388873057 is a deficient number, since it is larger than the sum of its proper divisors (21027103).

388873057 is a wasteful number, since it uses less digits than its factorization.

388873057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28023.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 388873057 is about 19719.8645279322. The cubic root of 388873057 is about 729.9099513621.

The spelling of 388873057 in words is "three hundred eighty-eight million, eight hundred seventy-three thousand, fifty-seven".

Divisors: 1 19 751 14269 27253 517807 20467003 388873057