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210232001 = 724290449
BaseRepresentation
bin11001000011111…
…10001011000001
3112122120220002102
430201332023001
5412304411001
632510000145
75131641200
oct1441761301
9478526072
10210232001
11a8741461
125a4a6055
133472a645
141dcc7237
15136cae6b
hexc87e2c1

210232001 has 6 divisors (see below), whose sum is σ = 244555650. Its totient is φ = 180198816.

The previous prime is 210231977. The next prime is 210232019. The reversal of 210232001 is 100232012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 170981776 + 39250225 = 13076^2 + 6265^2 .

It is not a de Polignac number, because 210232001 - 214 = 210215617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210232091) 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 5 ways as a sum of consecutive naturals, for example, 2145176 + ... + 2145273.

It is an arithmetic number, because the mean of its divisors is an integer number (40759275).

Almost surely, 2210232001 is an apocalyptic number.

It is an amenable number.

210232001 is a deficient number, since it is larger than the sum of its proper divisors (34323649).

210232001 is an equidigital number, since it uses as much as digits as its factorization.

210232001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290463 (or 4290456 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 210232001 is about 14499.3793315438. The cubic root of 210232001 is about 594.6110029470.

Adding to 210232001 its sum of digits (11), we get a palindrome (210232012).

Adding to 210232001 its reverse (100232012), we get a palindrome (310464013).

The spelling of 210232001 in words is "two hundred ten million, two hundred thirty-two thousand, one".

Divisors: 1 7 49 4290449 30033143 210232001