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212792149 = 656332423
BaseRepresentation
bin11001010111011…
…11001101010101
3112211101221221201
430223233031111
5413433322044
633040512501
75162463163
oct1453571525
9484357851
10212792149
11aa12a989
125b31b731
1335115a1b
1420392233
1513a347d4
hexcaef355

212792149 has 4 divisors (see below), whose sum is σ = 212831136. Its totient is φ = 212753164.

The previous prime is 212792141. The next prime is 212792161. The reversal of 212792149 is 941297212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212792149 - 23 = 212792141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212792141) 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 3 ways as a sum of consecutive naturals, for example, 9649 + ... + 22774.

It is an arithmetic number, because the mean of its divisors is an integer number (53207784).

Almost surely, 2212792149 is an apocalyptic number.

It is an amenable number.

212792149 is a deficient number, since it is larger than the sum of its proper divisors (38987).

212792149 is an equidigital number, since it uses as much as digits as its factorization.

212792149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38986.

The product of its digits is 18144, while the sum is 37.

The square root of 212792149 is about 14587.3969233719. The cubic root of 212792149 is about 597.0149412615.

The spelling of 212792149 in words is "two hundred twelve million, seven hundred ninety-two thousand, one hundred forty-nine".

Divisors: 1 6563 32423 212792149