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16233980 = 22571719359
BaseRepresentation
bin111101111011…
…010111111100
31010112202211112
4331323113330
513123441410
61335541152
7254662250
oct75732774
933482745
1016233980
119188914
12552a7b8
133495209
142228260
15165a105
hexf7b5fc

16233980 has 96 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 4948992.

The previous prime is 16233979. The next prime is 16233983. The reversal of 16233980 is 8933261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16233983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45041 + ... + 45399.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 216233980 is an apocalyptic number.

16233980 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 16233980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

16233980 is an abundant number, since it is smaller than the sum of its proper divisors (27311620).

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

16233980 is a wasteful number, since it uses less digits than its factorization.

16233980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16233980 is about 4029.1413477315. The cubic root of 16233980 is about 253.2065886460.

The spelling of 16233980 in words is "sixteen million, two hundred thirty-three thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 17 19 20 28 34 35 38 68 70 76 85 95 119 133 140 170 190 238 266 323 340 359 380 476 532 595 646 665 718 1190 1292 1330 1436 1615 1795 2261 2380 2513 2660 3230 3590 4522 5026 6103 6460 6821 7180 9044 10052 11305 12206 12565 13642 22610 24412 25130 27284 30515 34105 42721 45220 47747 50260 61030 68210 85442 95494 115957 122060 136420 170884 190988 213605 231914 238735 427210 463828 477470 579785 811699 854420 954940 1159570 1623398 2319140 3246796 4058495 8116990 16233980