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12272941 = 64319087
BaseRepresentation
bin101110110100…
…010100101101
3212002112022101
4232310110231
511120213231
61115015101
7206214112
oct56642455
925075271
1012272941
116a2292a
12413a491
1327092c5
1418b6909
151126661
hexbb452d

12272941 has 4 divisors (see below), whose sum is σ = 12292672. Its totient is φ = 12253212.

The previous prime is 12272893. The next prime is 12272951. The reversal of 12272941 is 14927221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14927221 = 25159471.

It is a cyclic number.

It is not a de Polignac number, because 12272941 - 223 = 3884333 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 (12272951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8901 + ... + 10186.

It is an arithmetic number, because the mean of its divisors is an integer number (3073168).

Almost surely, 212272941 is an apocalyptic number.

It is an amenable number.

12272941 is a deficient number, since it is larger than the sum of its proper divisors (19731).

12272941 is an equidigital number, since it uses as much as digits as its factorization.

12272941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19730.

The product of its digits is 2016, while the sum is 28.

The square root of 12272941 is about 3503.2757527777. The cubic root of 12272941 is about 230.6656269328.

The spelling of 12272941 in words is "twelve million, two hundred seventy-two thousand, nine hundred forty-one".

Divisors: 1 643 19087 12272941