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214391073 = 31323594051
BaseRepresentation
bin11001100011101…
…01100100100001
3112221102012021010
430301311210201
5414341003243
633135051133
75212202601
oct1461654441
9487365233
10214391073
11100022206
125b970aa9
1335555730
142068ac01
1513c4d433
hexcc75921

214391073 has 32 divisors (see below), whose sum is σ = 326753280. Its totient is φ = 124027200.

The previous prime is 214391059. The next prime is 214391083. The reversal of 214391073 is 370193412.

It is not a de Polignac number, because 214391073 - 210 = 214390049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214391073.

It is not an unprimeable number, because it can be changed into a prime (214391033) 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 31 ways as a sum of consecutive naturals, for example, 50898 + ... + 54948.

It is an arithmetic number, because the mean of its divisors is an integer number (10211040).

Almost surely, 2214391073 is an apocalyptic number.

214391073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

214391073 is a deficient number, since it is larger than the sum of its proper divisors (112362207).

214391073 is a wasteful number, since it uses less digits than its factorization.

214391073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 214391073 is about 14642.0993371852. The cubic root of 214391073 is about 598.5065384833.

The spelling of 214391073 in words is "two hundred fourteen million, three hundred ninety-one thousand, seventy-three".

Divisors: 1 3 13 23 39 59 69 177 299 767 897 1357 2301 4051 4071 12153 17641 52663 52923 93173 157989 239009 279519 717027 1211249 3107117 3633747 5497207 9321351 16491621 71463691 214391073