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16920260 = 2257196361
BaseRepresentation
bin100000010001…
…0111011000100
31011211122020022
41000202323010
513312422020
61402354312
7263551130
oct100427304
934748208
1016920260
119607495
1257bb998
1336756b6
1423663c0
151743625
hex1022ec4

16920260 has 48 divisors (see below), whose sum is σ = 42752640. Its totient is φ = 5495040.

The previous prime is 16920259. The next prime is 16920263. The reversal of 16920260 is 6202961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16920263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521 + ... + 5840.

It is an arithmetic number, because the mean of its divisors is an integer number (890680).

Almost surely, 216920260 is an apocalyptic number.

16920260 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 16920260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21376320).

16920260 is an abundant number, since it is smaller than the sum of its proper divisors (25832380).

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

16920260 is a wasteful number, since it uses less digits than its factorization.

16920260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6396 (or 6394 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 16920260 is about 4113.4243642007. The cubic root of 16920260 is about 256.7255014017.

The spelling of 16920260 in words is "sixteen million, nine hundred twenty thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 19 20 28 35 38 70 76 95 133 140 190 266 380 532 665 1330 2660 6361 12722 25444 31805 44527 63610 89054 120859 127220 178108 222635 241718 445270 483436 604295 846013 890540 1208590 1692026 2417180 3384052 4230065 8460130 16920260