Search a number
-
+
388206245 = 5741270527
BaseRepresentation
bin10111001000111…
…000111010100101
31000001110220212002
4113020320322211
51243340044440
6102304335045
712422461430
oct2710707245
91001426762
10388206245
1118a150109
12aa014485
136257244b
14397b4817
1524134115
hex17238ea5

388206245 has 16 divisors (see below), whose sum is σ = 545384448. Its totient is φ = 259704960.

The previous prime is 388206223. The next prime is 388206251. The reversal of 388206245 is 542602883.

It is not a de Polignac number, because 388206245 - 28 = 388205989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388206199 and 388206208.

It is a congruent 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, 133829 + ... + 136698.

It is an arithmetic number, because the mean of its divisors is an integer number (34086528).

Almost surely, 2388206245 is an apocalyptic number.

388206245 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

388206245 is a deficient number, since it is larger than the sum of its proper divisors (157178203).

388206245 is a wasteful number, since it uses less digits than its factorization.

388206245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270580.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 388206245 is about 19702.9501598111. The cubic root of 388206245 is about 729.4925133622.

The spelling of 388206245 in words is "three hundred eighty-eight million, two hundred six thousand, two hundred forty-five".

Divisors: 1 5 7 35 41 205 287 1435 270527 1352635 1893689 9468445 11091607 55458035 77641249 388206245