12434256 has 80 divisors (see below), whose sum is σ = 36158400. Its totient is φ = 4090752.

The previous prime is 12434249. The next prime is 12434269. The reversal of 12434256 is 65243421.

It is a super-2 number, since 2×12434256² = 309221444547072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46090 + ... + 46358.

It is an arithmetic number, because the mean of its divisors is an integer number (451980).

Almost surely, 2^12434256 is an apocalyptic number.

12434256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12434256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18079200).

12434256 is an abundant number, since it is smaller than the sum of its proper divisors (23724144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12434256 is a wasteful number, since it uses less digits than its factorization.

12434256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 381 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 12434256 is about 3526.2240427971. The cubic root of 12434256 is about 231.6718507774.

Adding to 12434256 its reverse (65243421), we get a palindrome (77677677).

The spelling of 12434256 in words is "twelve million, four hundred thirty-four thousand, two hundred fifty-six".