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420212814 = 23744922283
BaseRepresentation
bin11001000010111…
…111000001001110
31002021201000121120
4121002333001032
51330033302224
6105410341410
713261515150
oct3102770116
91067630546
10420212814
111a622111a
12b888a866
136909a848
143db46ad0
1526d57779
hex190bf04e

420212814 has 32 divisors (see below), whose sum is σ = 962668800. Its totient is φ = 119788032.

The previous prime is 420212803. The next prime is 420212831. The reversal of 420212814 is 418212024.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7717 + ... + 29999.

It is an arithmetic number, because the mean of its divisors is an integer number (30083400).

Almost surely, 2420212814 is an apocalyptic number.

420212814 is an abundant number, since it is smaller than the sum of its proper divisors (542455986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420212814 is a wasteful number, since it uses less digits than its factorization.

420212814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22744.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 420212814 is about 20499.0930043258. The cubic root of 420212814 is about 749.0137044188.

Adding to 420212814 its reverse (418212024), we get a palindrome (838424838).

The spelling of 420212814 in words is "four hundred twenty million, two hundred twelve thousand, eight hundred fourteen".

Divisors: 1 2 3 6 7 14 21 42 449 898 1347 2694 3143 6286 9429 18858 22283 44566 66849 133698 155981 311962 467943 935886 10005067 20010134 30015201 60030402 70035469 140070938 210106407 420212814