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389076 = 22332423
BaseRepresentation
bin1011110111111010100
3201202201020
41132333110
544422301
612201140
73210222
oct1367724
9652636
10389076
11246356
121691b0
1310812c
14a1b12
157a436
hex5efd4

389076 has 12 divisors (see below), whose sum is σ = 907872. Its totient is φ = 129688.

The previous prime is 389057. The next prime is 389083. The reversal of 389076 is 670983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

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 389076.

It is an unprimeable number.

389076 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, 16200 + ... + 16223.

It is an arithmetic number, because the mean of its divisors is an integer number (75656).

2389076 is an apocalyptic number.

389076 is the 395-th centered pentagonal number.

It is an amenable number.

389076 is an abundant number, since it is smaller than the sum of its proper divisors (518796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389076 is a wasteful number, since it uses less digits than its factorization.

389076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32430 (or 32428 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 389076 is about 623.7595690649. The cubic root of 389076 is about 73.0036903120.

The spelling of 389076 in words is "three hundred eighty-nine thousand, seventy-six".

Divisors: 1 2 3 4 6 12 32423 64846 97269 129692 194538 389076