Search a number
-
+
214707081 = 3533374007
BaseRepresentation
bin11001100110000…
…10101110001001
3112222000020202010
430303002232021
5414431111311
633145530133
75214660111
oct1463025611
9488006663
10214707081
11100218676
125baa3949
1335636514
1420730041
1513cb1da6
hexccc2b89

214707081 has 16 divisors (see below), whose sum is σ = 292616064. Its totient is φ = 139985664.

The previous prime is 214707079. The next prime is 214707083. The reversal of 214707081 is 180707412.

It is an interprime number because it is at equal distance from previous prime (214707079) and next prime (214707083).

It is not a de Polignac number, because 214707081 - 21 = 214707079 is a prime.

It is a super-2 number, since 2×2147070812 = 92198261263081122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (214707083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51580 + ... + 55586.

It is an arithmetic number, because the mean of its divisors is an integer number (18288504).

Almost surely, 2214707081 is an apocalyptic number.

It is an amenable number.

214707081 is a deficient number, since it is larger than the sum of its proper divisors (77908983).

214707081 is a wasteful number, since it uses less digits than its factorization.

214707081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 214707081 is about 14652.8864391969. The cubic root of 214707081 is about 598.8004562004.

The spelling of 214707081 in words is "two hundred fourteen million, seven hundred seven thousand, eighty-one".

Divisors: 1 3 53 159 337 1011 4007 12021 17861 53583 212371 637113 1350359 4051077 71569027 214707081