Search a number
-
+
488531380 = 22517284521
BaseRepresentation
bin11101000111100…
…110010110110100
31021001020222001211
4131013212112310
52000031001010
6120250531204
715051306511
oct3507462664
91231228054
10488531380
11230843947
12117736b04
137a29ac2c
1448c4c308
152cd5008a
hex1d1e65b4

488531380 has 36 divisors (see below), whose sum is σ = 1089826668. Its totient is φ = 183915520.

The previous prime is 488531377. The next prime is 488531389. The reversal of 488531380 is 83135884.

It can be written as a sum of positive squares in 6 ways, for example, as 9709456 + 478821924 = 3116^2 + 21882^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488531389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36481 + ... + 48040.

It is an arithmetic number, because the mean of its divisors is an integer number (30272963).

Almost surely, 2488531380 is an apocalyptic number.

It is an amenable number.

488531380 is an abundant number, since it is smaller than the sum of its proper divisors (601295288).

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

488531380 is a wasteful number, since it uses less digits than its factorization.

488531380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84564 (or 84545 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 488531380 is about 22102.7459832483. The cubic root of 488531380 is about 787.5850946931.

The spelling of 488531380 in words is "four hundred eighty-eight million, five hundred thirty-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 289 340 578 1156 1445 2890 5780 84521 169042 338084 422605 845210 1436857 1690420 2873714 5747428 7184285 14368570 24426569 28737140 48853138 97706276 122132845 244265690 488531380