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4222001 = 71722087
BaseRepresentation
bin10000000110110000110001
321221111111102
4100012300301
52040101001
6230254145
750613020
oct20066061
97844442
104222001
112424063
1214b7355
13b4a934
147bc8b7
15585e6b
hex406c31

4222001 has 12 divisors (see below), whose sum is σ = 5128128. Its totient is φ = 3404352.

The previous prime is 4221989. The next prime is 4222003. The reversal of 4222001 is 1002224.

It is not a de Polignac number, because 4222001 - 210 = 4220977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4222003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 980 + ... + 3066.

It is an arithmetic number, because the mean of its divisors is an integer number (427344).

Almost surely, 24222001 is an apocalyptic number.

It is an amenable number.

4222001 is a deficient number, since it is larger than the sum of its proper divisors (906127).

4222001 is a wasteful number, since it uses less digits than its factorization.

4222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4222001 is about 2054.7508364763. The cubic root of 4222001 is about 161.6240966787.

Adding to 4222001 its reverse (1002224), we get a palindrome (5224225).

The spelling of 4222001 in words is "four million, two hundred twenty-two thousand, one".

Divisors: 1 7 17 119 289 2023 2087 14609 35479 248353 603143 4222001