Search a number
-
+
389502 = 2337213
BaseRepresentation
bin1011111000101111110
3201210022000
41133011332
544431002
612203130
73211401
oct1370576
9653260
10389502
11246703
121694a6
13108399
14a1d38
157a61c
hex5f17e

389502 has 16 divisors (see below), whose sum is σ = 865680. Its totient is φ = 129816.

The previous prime is 389483. The next prime is 389507. The reversal of 389502 is 205983.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389507) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3553 + ... + 3660.

It is an arithmetic number, because the mean of its divisors is an integer number (54105).

2389502 is an apocalyptic number.

389502 is an abundant number, since it is smaller than the sum of its proper divisors (476178).

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

389502 is a wasteful number, since it uses less digits than its factorization.

389502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224 (or 7218 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 389502 is about 624.1009533721. The cubic root of 389502 is about 73.0303245502.

The spelling of 389502 in words is "three hundred eighty-nine thousand, five hundred two".

Divisors: 1 2 3 6 9 18 27 54 7213 14426 21639 43278 64917 129834 194751 389502