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12292212 = 2232344537
BaseRepresentation
bin101110111001…
…000001110100
3212010111202010
4232321001310
511121322322
61115244220
7206324232
oct56710164
925114663
1012292212
116a36359
124149670
132714cca
1418bd952
15112c20c
hexbb9074

12292212 has 24 divisors (see below), whose sum is σ = 29929536. Its totient is φ = 3919168.

The previous prime is 12292193. The next prime is 12292261. The reversal of 12292212 is 21229221.

It is a happy number.

12292212 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21993 + ... + 22544.

It is an arithmetic number, because the mean of its divisors is an integer number (1247064).

Almost surely, 212292212 is an apocalyptic number.

12292212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12292212 is an abundant number, since it is smaller than the sum of its proper divisors (17637324).

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

12292212 is a wasteful number, since it uses less digits than its factorization.

12292212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44567 (or 44565 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 12292212 is about 3506.0250997390. The cubic root of 12292212 is about 230.7862943622.

The spelling of 12292212 in words is "twelve million, two hundred ninety-two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 44537 89074 133611 178148 267222 534444 1024351 2048702 3073053 4097404 6146106 12292212