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388027 = 3112517
BaseRepresentation
bin1011110101110111011
3201201021101
41132232323
544404102
612152231
73204163
oct1365673
9651241
10388027
11245592
12168677
13107803
14a15a3
1579e87
hex5ebbb

388027 has 4 divisors (see below), whose sum is σ = 400576. Its totient is φ = 375480.

The previous prime is 388009. The next prime is 388051. The reversal of 388027 is 720883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720883 = 2632741.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-388027 is a prime.

It is a Duffinian number.

388027 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 387986 and 388004.

It is not an unprimeable number, because it can be changed into a prime (388057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6228 + ... + 6289.

It is an arithmetic number, because the mean of its divisors is an integer number (100144).

2388027 is an apocalyptic number.

388027 is a deficient number, since it is larger than the sum of its proper divisors (12549).

388027 is a wasteful number, since it uses less digits than its factorization.

388027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12548.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 388027 is about 622.9181326627. The cubic root of 388027 is about 72.9380220805.

It can be divided in two parts, 38802 and 7, that added together give a square (38809 = 1972).

The spelling of 388027 in words is "three hundred eighty-eight thousand, twenty-seven".

Divisors: 1 31 12517 388027