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12023401 = 13924877
BaseRepresentation
bin101101110111…
…011001101001
3211121212000011
4231313121221
511034222101
61105411521
7204124435
oct55673151
924555004
1012023401
1168723a5
124039ba1
13264c850
14184d9c5
1510c7751
hexb77669

12023401 has 4 divisors (see below), whose sum is σ = 12948292. Its totient is φ = 11098512.

The previous prime is 12023393. The next prime is 12023419. The reversal of 12023401 is 10432021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10432021 = 83125687.

It can be written as a sum of positive squares in 2 ways, for example, as 4405801 + 7617600 = 2099^2 + 2760^2 .

It is a cyclic number.

It is not a de Polignac number, because 12023401 - 23 = 12023393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 924877 = 12023401 / (1 + 2 + 0 + 2 + 3 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12023461) 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, 462426 + ... + 462451.

It is an arithmetic number, because the mean of its divisors is an integer number (3237073).

Almost surely, 212023401 is an apocalyptic number.

It is an amenable number.

12023401 is a deficient number, since it is larger than the sum of its proper divisors (924891).

12023401 is an equidigital number, since it uses as much as digits as its factorization.

12023401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924890.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12023401 is about 3467.4776134822. The cubic root of 12023401 is about 229.0915710898.

Adding to 12023401 its reverse (10432021), we get a palindrome (22455422).

The spelling of 12023401 in words is "twelve million, twenty-three thousand, four hundred one".

Divisors: 1 13 924877 12023401