12190428 has 36 divisors (see below), whose sum is σ = 32628960. Its totient is φ = 3824256.

The previous prime is 12190421. The next prime is 12190441. The reversal of 12190428 is 82409121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9348 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (906360).

Almost surely, 2^12190428 is an apocalyptic number.

12190428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12190428 is an abundant number, since it is smaller than the sum of its proper divisors (20438532).

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

12190428 is a wasteful number, since it uses less digits than its factorization.

12190428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19946 (or 19941 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12190428 is about 3491.4793426283. The cubic root of 12190428 is about 230.1475297978.

Adding to 12190428 its reverse (82409121), we get a palindrome (94599549).

The spelling of 12190428 in words is "twelve million, one hundred ninety thousand, four hundred twenty-eight".