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388023 = 3129341
BaseRepresentation
bin1011110101110110111
3201201021020
41132232313
544404043
612152223
73204156
oct1365667
9651236
10388023
11245589
12168673
131077cc
14a159d
1579e83
hex5ebb7

388023 has 4 divisors (see below), whose sum is σ = 517368. Its totient is φ = 258680.

The previous prime is 388009. The next prime is 388051. The reversal of 388023 is 320883.

388023 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320883 = 3106961.

It is a cyclic number.

It is not a de Polignac number, because 388023 - 214 = 371639 is a prime.

It is a D-number.

388023 is strictly pandigital in base 7.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 387984 and 388002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388823) 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, 64668 + ... + 64673.

It is an arithmetic number, because the mean of its divisors is an integer number (129342).

2388023 is an apocalyptic number.

388023 is a deficient number, since it is larger than the sum of its proper divisors (129345).

388023 is a wasteful number, since it uses less digits than its factorization.

388023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129344.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 388023 is about 622.9149219597. The cubic root of 388023 is about 72.9377714510.

The spelling of 388023 in words is "three hundred eighty-eight thousand, twenty-three".

Divisors: 1 3 129341 388023