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12026401 = 23522887
BaseRepresentation
bin101101111000…
…001000100001
3211122000010021
4231320020201
511034321101
61105433441
7204136252
oct55701041
924560107
1012026401
116874682
12403b881
13265101a
141850b29
1510c85a1
hexb78221

12026401 has 4 divisors (see below), whose sum is σ = 12549312. Its totient is φ = 11503492.

The previous prime is 12026381. The next prime is 12026423. The reversal of 12026401 is 10462021.

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: 10462021 = 17615413.

It is a cyclic number.

It is not a de Polignac number, because 12026401 - 223 = 3637793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12026461) 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, 261421 + ... + 261466.

It is an arithmetic number, because the mean of its divisors is an integer number (3137328).

Almost surely, 212026401 is an apocalyptic number.

It is an amenable number.

12026401 is a deficient number, since it is larger than the sum of its proper divisors (522911).

12026401 is an equidigital number, since it uses as much as digits as its factorization.

12026401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522910.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12026401 is about 3467.9101776142. The cubic root of 12026401 is about 229.1106233130.

Adding to 12026401 its reverse (10462021), we get a palindrome (22488422).

The spelling of 12026401 in words is "twelve million, twenty-six thousand, four hundred one".

Divisors: 1 23 522887 12026401