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16690284 = 223213191877
BaseRepresentation
bin111111101010…
…110001101100
31011101221202200
4333222301230
513233042114
61353421500
7261602502
oct77526154
934357680
1016690284
11946a726
12570a890
1335c4b10
142306672
1516ea409
hexfeac6c

16690284 has 72 divisors (see below), whose sum is σ = 47851440. Its totient is φ = 4862592.

The previous prime is 16690279. The next prime is 16690291. The reversal of 16690284 is 48209661.

It is a super-4 number, since 4×166902844 (a number of 30 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7954 + ... + 9830.

Almost surely, 216690284 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 16690284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23925720).

16690284 is an abundant number, since it is smaller than the sum of its proper divisors (31161156).

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

16690284 is a wasteful number, since it uses less digits than its factorization.

16690284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 16690284 is about 4085.3744014472. The cubic root of 16690284 is about 255.5570750872.

The spelling of 16690284 in words is "sixteen million, six hundred ninety thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 9 12 13 18 19 26 36 38 39 52 57 76 78 114 117 156 171 228 234 247 342 468 494 684 741 988 1482 1877 2223 2964 3754 4446 5631 7508 8892 11262 16893 22524 24401 33786 35663 48802 67572 71326 73203 97604 106989 142652 146406 213978 219609 292812 320967 427956 439218 463619 641934 878436 927238 1283868 1390857 1854476 2781714 4172571 5563428 8345142 16690284