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7200001 = 83223389
BaseRepresentation
bin11011011101110100000001
3111112210112201
4123131310001
53320400001
6414153201
7115125154
oct33356401
914483481
107200001
114078516
1224b2801
131651273
14d55c9b
15973501
hex6ddd01

7200001 has 8 divisors (see below), whose sum is σ = 7338240. Its totient is φ = 7063152.

The previous prime is 7199957. The next prime is 7200007. The reversal of 7200001 is 1000027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-7200001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7200007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18315 + ... + 18703.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 27200001 is an apocalyptic number.

It is an amenable number.

7200001 is a deficient number, since it is larger than the sum of its proper divisors (138239).

7200001 is a wasteful number, since it uses less digits than its factorization.

7200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 7200001 is about 2683.2817593387. The cubic root of 7200001 is about 193.0978858608.

Adding to 7200001 its reverse (1000027), we get a palindrome (8200028).

The spelling of 7200001 in words is "seven million, two hundred thousand, one".

Divisors: 1 83 223 389 18509 32287 86747 7200001