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14121940 = 2257195309
BaseRepresentation
bin110101110111…
…101111010100
3222120110122211
4311313233110
512103400230
61222403204
7231014560
oct65675724
928513584
1014121940
117a76028
124890504
132c05aa1
141c386a0
15138e42a
hexd77bd4

14121940 has 48 divisors (see below), whose sum is σ = 35683200. Its totient is φ = 4586112.

The previous prime is 14121929. The next prime is 14121941. The reversal of 14121940 is 4912141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14121941) 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, 6 + ... + 5314.

It is an arithmetic number, because the mean of its divisors is an integer number (743400).

Almost surely, 214121940 is an apocalyptic number.

14121940 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 14121940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17841600).

14121940 is an abundant number, since it is smaller than the sum of its proper divisors (21561260).

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

14121940 is a wasteful number, since it uses less digits than its factorization.

14121940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344 (or 5342 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 14121940 is about 3757.9169761984. The cubic root of 14121940 is about 241.7119492369.

The spelling of 14121940 in words is "fourteen million, one hundred twenty-one thousand, nine hundred forty".

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 5309 10618 21236 26545 37163 53090 74326 100871 106180 148652 185815 201742 371630 403484 504355 706097 743260 1008710 1412194 2017420 2824388 3530485 7060970 14121940