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212013412 = 221328314407
BaseRepresentation
bin11001010001100…
…01000101100100
3112202221101201121
430220301011210
5413233412122
633012103324
75153040622
oct1450610544
9482841647
10212013412
11a97488a6
125b004b44
1334c02430
142022c512
151392dbc7
hexca31164

212013412 has 24 divisors (see below), whose sum is σ = 401003456. Its totient is φ = 97499808.

The previous prime is 212013407. The next prime is 212013421. The reversal of 212013412 is 214310212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7513 + ... + 21919.

Almost surely, 2212013412 is an apocalyptic number.

It is an amenable number.

212013412 is a deficient number, since it is larger than the sum of its proper divisors (188990044).

212013412 is a wasteful number, since it uses less digits than its factorization.

212013412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14707 (or 14705 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212013412 is about 14560.6803412478. The cubic root of 212013412 is about 596.2857697484.

Adding to 212013412 its reverse (214310212), we get a palindrome (426323624).

The spelling of 212013412 in words is "two hundred twelve million, thirteen thousand, four hundred twelve".

Divisors: 1 2 4 13 26 52 283 566 1132 3679 7358 14407 14716 28814 57628 187291 374582 749164 4077181 8154362 16308724 53003353 106006706 212013412