12022478 has 16 divisors (see below), whose sum is σ = 20443920. Its totient is φ = 5256576.

The previous prime is 12022477. The next prime is 12022481. The reversal of 12022478 is 87422021.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11675 + ... + 12662.

It is an arithmetic number, because the mean of its divisors is an integer number (1277745).

Almost surely, 2^12022478 is an apocalyptic number.

12022478 is a deficient number, since it is larger than the sum of its proper divisors (8421442).

12022478 is a wasteful number, since it uses less digits than its factorization.

12022478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24371.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 12022478 is about 3467.3445170620. The cubic root of 12022478 is about 229.0857087182.

Adding to 12022478 its reverse (87422021), we get a palindrome (99444499).

The spelling of 12022478 in words is "twelve million, twenty-two thousand, four hundred seventy-eight".