12019798 has 12 divisors (see below), whose sum is σ = 20973492. Its totient is φ = 5151300.

The previous prime is 12019793. The next prime is 12019801. The reversal of 12019798 is 89791021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12019793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61228 + ... + 61423.

It is an arithmetic number, because the mean of its divisors is an integer number (1747791).

Almost surely, 2^12019798 is an apocalyptic number.

12019798 is a deficient number, since it is larger than the sum of its proper divisors (8953694).

12019798 is a wasteful number, since it uses less digits than its factorization.

12019798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122667 (or 122660 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 12019798 is about 3466.9580326275. The cubic root of 12019798 is about 229.0686851805.

It can be divided in two parts, 120197 and 98, that added together give a triangular number (120295 = T₄₉₀).

The spelling of 12019798 in words is "twelve million, nineteen thousand, seven hundred ninety-eight".