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23304980 = 22523291747
BaseRepresentation
bin101100011100…
…1101100010100
31121212000102102
41120321230110
521431224410
62151301232
7402042356
oct130715424
947760372
1023304980
1112178416
12797a818
134a9c83a
1431490d6
1520a52a5
hex1639b14

23304980 has 48 divisors (see below), whose sum is σ = 52859520. Its totient is φ = 8604288.

The previous prime is 23304979. The next prime is 23305013. The reversal of 23304980 is 8940332.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 12467 + ... + 14213.

It is an arithmetic number, because the mean of its divisors is an integer number (1101240).

Almost surely, 223304980 is an apocalyptic number.

23304980 is a gapful number since it is divisible by the number (20) 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 23304980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26429760).

23304980 is an abundant number, since it is smaller than the sum of its proper divisors (29554540).

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

23304980 is a wasteful number, since it uses less digits than its factorization.

23304980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 23304980 is about 4827.5231744653. The cubic root of 23304980 is about 285.6381718680.

The spelling of 23304980 in words is "twenty-three million, three hundred four thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 23 29 46 58 92 115 116 145 230 290 460 580 667 1334 1747 2668 3335 3494 6670 6988 8735 13340 17470 34940 40181 50663 80362 101326 160724 200905 202652 253315 401810 506630 803620 1013260 1165249 2330498 4660996 5826245 11652490 23304980