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420200215 = 5671254329
BaseRepresentation
bin11001000010111…
…011111100010111
31002021200101022221
4121002323330113
51330032401330
6105410203211
713261433341
oct3102737427
91067611287
10420200215
111a6212706
12b8883507
1369094ba6
143db42291
1526d53b7a
hex190bbf17

420200215 has 8 divisors (see below), whose sum is σ = 511766640. Its totient is φ = 331142592.

The previous prime is 420200213. The next prime is 420200273. The reversal of 420200215 is 512002024.

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

It is a cyclic number.

It is not a de Polignac number, because 420200215 - 21 = 420200213 is a prime.

It is a super-3 number, since 3×4202002153 (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420200213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626830 + ... + 627499.

It is an arithmetic number, because the mean of its divisors is an integer number (63970830).

Almost surely, 2420200215 is an apocalyptic number.

420200215 is a deficient number, since it is larger than the sum of its proper divisors (91566425).

420200215 is a wasteful number, since it uses less digits than its factorization.

420200215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254401.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 420200215 is about 20498.7856957431. The cubic root of 420200215 is about 749.0062185944.

Adding to 420200215 its reverse (512002024), we get a palindrome (932202239).

The spelling of 420200215 in words is "four hundred twenty million, two hundred thousand, two hundred fifteen".

Divisors: 1 5 67 335 1254329 6271645 84040043 420200215