12263428 has 48 divisors (see below), whose sum is σ = 23595264. Its totient is φ = 5564160.

The previous prime is 12263423. The next prime is 12263429. The reversal of 12263428 is 82436221.

It is a super-2 number, since 2×12263428² = 300783332622368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12263396 and 12263405.

It is not an unprimeable number, because it can be changed into a prime (12263423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260901 + ... + 260947.

It is an arithmetic number, because the mean of its divisors is an integer number (491568).

Almost surely, 2^12263428 is an apocalyptic number.

It is an amenable number.

12263428 is a deficient number, since it is larger than the sum of its proper divisors (11331836).

12263428 is a wasteful number, since it uses less digits than its factorization.

12263428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 170 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 12263428 is about 3501.9177603136. The cubic root of 12263428 is about 230.6060136934.

Adding to 12263428 its reverse (82436221), we get a palindrome (94699649).

The spelling of 12263428 in words is "twelve million, two hundred sixty-three thousand, four hundred twenty-eight".