Search a number
-
+
1203441980 = 2251389131397
BaseRepresentation
bin100011110111011…
…0001000100111100
310002212111012001012
41013232301010330
54431040120410
6315225534352
741552042126
oct10756610474
93085435035
101203441980
11568347854
122970443b8
1316242b060
14b5b88216
15709ba605
hex47bb113c

1203441980 has 96 divisors (see below), whose sum is σ = 2780205120. Its totient is φ = 434903040.

The previous prime is 1203441961. The next prime is 1203442001. The reversal of 1203441980 is 891443021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3031142 + ... + 3031538.

It is an arithmetic number, because the mean of its divisors is an integer number (28960470).

Almost surely, 21203441980 is an apocalyptic number.

1203441980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1203441980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390102560).

1203441980 is an abundant number, since it is smaller than the sum of its proper divisors (1576763140).

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

1203441980 is a wasteful number, since it uses less digits than its factorization.

1203441980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1203441980 is about 34690.6612793703. The cubic root of 1203441980 is about 1063.6736130729.

The spelling of 1203441980 in words is "one billion, two hundred three million, four hundred forty-one thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 89 130 131 178 260 262 356 397 445 524 655 794 890 1157 1310 1588 1703 1780 1985 2314 2620 3406 3970 4628 5161 5785 6812 7940 8515 10322 11570 11659 17030 20644 23140 23318 25805 34060 35333 46636 51610 52007 58295 70666 103220 104014 116590 141332 151567 176665 208028 233180 260035 303134 353330 459329 520070 606268 676091 706660 757835 918658 1040140 1352182 1515670 1837316 2296645 2704364 3031340 3380455 4593290 4628623 6760910 9186580 9257246 13521820 18514492 23143115 46286230 60172099 92572460 120344198 240688396 300860495 601720990 1203441980