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14071220 = 225703561
BaseRepresentation
bin110101101011…
…010110110100
3222110220002022
4311223112310
512100234340
61221332312
7230413652
oct65532664
928426068
1014071220
117a40a09
124867098
132bb8987
141c23dd2
15137e3b5
hexd6b5b4

14071220 has 12 divisors (see below), whose sum is σ = 29549604. Its totient is φ = 5628480.

The previous prime is 14071217. The next prime is 14071231. The reversal of 14071220 is 2217041.

It can be written as a sum of positive squares in 2 ways, for example, as 5626384 + 8444836 = 2372^2 + 2906^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351761 + ... + 351800.

It is an arithmetic number, because the mean of its divisors is an integer number (2462467).

Almost surely, 214071220 is an apocalyptic number.

14071220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14071220 is an abundant number, since it is smaller than the sum of its proper divisors (15478384).

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

14071220 is a wasteful number, since it uses less digits than its factorization.

14071220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703570 (or 703568 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 14071220 is about 3751.1624864834. The cubic root of 14071220 is about 241.4222266127.

Adding to 14071220 its reverse (2217041), we get a palindrome (16288261).

The spelling of 14071220 in words is "fourteen million, seventy-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 703561 1407122 2814244 3517805 7035610 14071220