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4372213 = 17257189
BaseRepresentation
bin10000101011011011110101
322020010112211
4100223123311
52104402323
6233413421
752106656
oct20533365
98203484
104372213
1125169aa
12156a271
13ba1111
1481b52d
155b570d
hex42b6f5

4372213 has 4 divisors (see below), whose sum is σ = 4629420. Its totient is φ = 4115008.

The previous prime is 4372211. The next prime is 4372237. The reversal of 4372213 is 3122734.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3122734 = 21561367.

It can be written as a sum of positive squares in 2 ways, for example, as 1249924 + 3122289 = 1118^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 4372213 - 21 = 4372211 is a prime.

It is a super-3 number, since 3×43722133 (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4372211) 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 3 ways as a sum of consecutive naturals, for example, 128578 + ... + 128611.

It is an arithmetic number, because the mean of its divisors is an integer number (1157355).

Almost surely, 24372213 is an apocalyptic number.

It is an amenable number.

4372213 is a deficient number, since it is larger than the sum of its proper divisors (257207).

4372213 is a wasteful number, since it uses less digits than its factorization.

4372213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257206.

The product of its digits is 1008, while the sum is 22.

The square root of 4372213 is about 2090.9837397742. The cubic root of 4372213 is about 163.5185787540.

Adding to 4372213 its reverse (3122734), we get a palindrome (7494947).

The spelling of 4372213 in words is "four million, three hundred seventy-two thousand, two hundred thirteen".

Divisors: 1 17 257189 4372213