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12229373 = 13940721
BaseRepresentation
bin101110101001…
…101011111101
3212000022112202
4232221223331
511112314443
61114041245
7205643102
oct56515375
925008482
1012229373
1169a3122
124119225
1326c2520
1418a4aa9
1511187b8
hexba9afd

12229373 has 4 divisors (see below), whose sum is σ = 13170108. Its totient is φ = 11288640.

The previous prime is 12229367. The next prime is 12229381. The reversal of 12229373 is 37392221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37392221 = 71526651.

It can be written as a sum of positive squares in 2 ways, for example, as 5484964 + 6744409 = 2342^2 + 2597^2 .

It is a cyclic number.

It is not a de Polignac number, because 12229373 - 28 = 12229117 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 (12229313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470348 + ... + 470373.

It is an arithmetic number, because the mean of its divisors is an integer number (3292527).

Almost surely, 212229373 is an apocalyptic number.

12229373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12229373 is a deficient number, since it is larger than the sum of its proper divisors (940735).

12229373 is an equidigital number, since it uses as much as digits as its factorization.

12229373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940734.

The product of its digits is 4536, while the sum is 29.

The square root of 12229373 is about 3497.0520442224. The cubic root of 12229373 is about 230.3923548795.

The spelling of 12229373 in words is "twelve million, two hundred twenty-nine thousand, three hundred seventy-three".

Divisors: 1 13 940721 12229373