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212219292 = 22325768813
BaseRepresentation
bin11001010011000…
…11010110011100
3112210022212010210
430221203112130
5413312004132
633020332420
75154556065
oct1451432634
9483285123
10212219292
11a987954a
125b0a4110
1334c7505c
142028356c
151396ebcc
hexca6359c

212219292 has 24 divisors (see below), whose sum is σ = 497112336. Its totient is φ = 70463488.

The previous prime is 212219269. The next prime is 212219299. The reversal of 212219292 is 292912212.

212219292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212219299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31323 + ... + 37490.

It is an arithmetic number, because the mean of its divisors is an integer number (20713014).

Almost surely, 2212219292 is an apocalyptic number.

It is an amenable number.

212219292 is an abundant number, since it is smaller than the sum of its proper divisors (284893044).

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

212219292 is a wasteful number, since it uses less digits than its factorization.

212219292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69077 (or 69075 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 212219292 is about 14567.7483503800. The cubic root of 212219292 is about 596.4787191743.

The spelling of 212219292 in words is "two hundred twelve million, two hundred nineteen thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 12 257 514 771 1028 1542 3084 68813 137626 206439 275252 412878 825756 17684941 35369882 53054823 70739764 106109646 212219292