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489632 = 251113107
BaseRepresentation
bin1110111100010100000
3220212122112
41313202200
5111132012
614254452
74106333
oct1674240
9825575
10489632
11304960
121b7428
13141b30
14ca61a
159a122
hex778a0

489632 has 48 divisors (see below), whose sum is σ = 1143072. Its totient is φ = 203520.

The previous prime is 489631. The next prime is 489653. The reversal of 489632 is 236984.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (489631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4523 + ... + 4629.

It is an arithmetic number, because the mean of its divisors is an integer number (23814).

2489632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571536).

489632 is an abundant number, since it is smaller than the sum of its proper divisors (653440).

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

489632 is a wasteful number, since it uses less digits than its factorization.

489632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 133 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 489632 is about 699.7370934858. The cubic root of 489632 is about 78.8176105349.

The spelling of 489632 in words is "four hundred eighty-nine thousand, six hundred thirty-two".

Divisors: 1 2 4 8 11 13 16 22 26 32 44 52 88 104 107 143 176 208 214 286 352 416 428 572 856 1144 1177 1391 1712 2288 2354 2782 3424 4576 4708 5564 9416 11128 15301 18832 22256 30602 37664 44512 61204 122408 244816 489632