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9144980 = 22513172069
BaseRepresentation
bin100010111000…
…101010010100
3122012121112222
4202320222110
54320114410
6524001512
7140505515
oct42705224
918177488
109144980
115186839
123090298
131b82640
141300a0c
15c09955
hex8b8a94

9144980 has 48 divisors (see below), whose sum is σ = 21908880. Its totient is φ = 3176448.

The previous prime is 9144917. The next prime is 9145033. The reversal of 9144980 is 894419.

It can be written as a sum of positive squares in 8 ways, for example, as 839056 + 8305924 = 916^2 + 2882^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9144980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3386 + ... + 5454.

It is an arithmetic number, because the mean of its divisors is an integer number (456435).

Almost surely, 29144980 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 9144980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10954440).

9144980 is an abundant number, since it is smaller than the sum of its proper divisors (12763900).

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

9144980 is a wasteful number, since it uses less digits than its factorization.

9144980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 9144980 is about 3024.0667982040. The cubic root of 9144980 is about 209.1193658926.

The spelling of 9144980 in words is "nine million, one hundred forty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 13 17 20 26 34 52 65 68 85 130 170 221 260 340 442 884 1105 2069 2210 4138 4420 8276 10345 20690 26897 35173 41380 53794 70346 107588 134485 140692 175865 268970 351730 457249 537940 703460 914498 1828996 2286245 4572490 9144980