Search a number
-
+
388025 = 52111783
BaseRepresentation
bin1011110101110111001
3201201021022
41132232321
544404100
612152225
73204161
oct1365671
9651238
10388025
11245590
12168675
13107801
14a15a1
1579e85
hex5ebb9

388025 has 24 divisors (see below), whose sum is σ = 562464. Its totient is φ = 262400.

The previous prime is 388009. The next prime is 388051. The reversal of 388025 is 520883.

388025 = 1432 + 1442 + ... + 1592.

It is not a de Polignac number, because 388025 - 24 = 388009 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387985 and 388003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4634 + ... + 4716.

It is an arithmetic number, because the mean of its divisors is an integer number (23436).

2388025 is an apocalyptic number.

It is an amenable number.

388025 is a deficient number, since it is larger than the sum of its proper divisors (174439).

388025 is a wasteful number, since it uses less digits than its factorization.

388025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 388025 is about 622.9165273133. The cubic root of 388025 is about 72.9378967660.

The spelling of 388025 in words is "three hundred eighty-eight thousand, twenty-five".

Divisors: 1 5 11 17 25 55 83 85 187 275 415 425 913 935 1411 2075 4565 4675 7055 15521 22825 35275 77605 388025