12290736 has 20 divisors (see below), whose sum is σ = 31751192. Its totient is φ = 4096896.

The previous prime is 12290713. The next prime is 12290737. The reversal of 12290736 is 63709221.

12290736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12290737) 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, 127981 + ... + 128076.

Almost surely, 2^12290736 is an apocalyptic number.

12290736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12290736 is an abundant number, since it is smaller than the sum of its proper divisors (19460456).

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

12290736 is a wasteful number, since it uses less digits than its factorization.

12290736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256068 (or 256062 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 12290736 is about 3505.8145986347. The cubic root of 12290736 is about 230.7770566919. Note that the first 3 decimals are identical.

Adding to 12290736 its reverse (63709221), we get a palindrome (75999957).

The spelling of 12290736 in words is "twelve million, two hundred ninety thousand, seven hundred thirty-six".