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2420217 = 32268913
BaseRepresentation
bin1001001110110111111001
311112221220200
421032313321
51104421332
6123512413
726400012
oct11166771
94487820
102420217
111403388
12988709
136697a7
14470009
1532c17c
hex24edf9

2420217 has 6 divisors (see below), whose sum is σ = 3495882. Its totient is φ = 1613472.

The previous prime is 2420213. The next prime is 2420237. The reversal of 2420217 is 7120242.

It can be written as a sum of positive squares in only one way, i.e., 2223081 + 197136 = 1491^2 + 444^2 .

It is not a de Polignac number, because 2420217 - 22 = 2420213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2420217.

It is not an unprimeable number, because it can be changed into a prime (2420213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134448 + ... + 134465.

It is an arithmetic number, because the mean of its divisors is an integer number (582647).

22420217 is an apocalyptic number.

It is an amenable number.

2420217 is a deficient number, since it is larger than the sum of its proper divisors (1075665).

2420217 is a wasteful number, since it uses less digits than its factorization.

2420217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268919 (or 268916 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2420217 is about 1555.7046634885. The cubic root of 2420217 is about 134.2614817016.

Adding to 2420217 its reverse (7120242), we get a palindrome (9540459).

The spelling of 2420217 in words is "two million, four hundred twenty thousand, two hundred seventeen".

Divisors: 1 3 9 268913 806739 2420217