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388022 = 21311481
BaseRepresentation
bin1011110101110110110
3201201021012
41132232312
544404042
612152222
73204155
oct1365666
9651235
10388022
11245588
12168672
131077cb
14a159c
1579e82
hex5ebb6

388022 has 8 divisors (see below), whose sum is σ = 586872. Its totient is φ = 192400.

The previous prime is 388009. The next prime is 388051. The reversal of 388022 is 220883.

388022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3880222 = 301122144968, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 388022.

It is an unprimeable number.

388022 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 479 + ... + 1002.

It is an arithmetic number, because the mean of its divisors is an integer number (73359).

2388022 is an apocalyptic number.

388022 is a deficient number, since it is larger than the sum of its proper divisors (198850).

388022 is a wasteful number, since it uses less digits than its factorization.

388022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 388022 is about 622.9141192813. The cubic root of 388022 is about 72.9377087933.

The spelling of 388022 in words is "three hundred eighty-eight thousand, twenty-two".

Divisors: 1 2 131 262 1481 2962 194011 388022