19869452 has 12 divisors (see below), whose sum is σ = 34815480. Its totient is φ = 9922176.

The previous prime is 19869439. The next prime is 19869457. The reversal of 19869452 is 25496891.

It is not an unprimeable number, because it can be changed into a prime (19869457) 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 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (2901290).

Almost surely, 2^19869452 is an apocalyptic number.

It is an amenable number.

19869452 is a deficient number, since it is larger than the sum of its proper divisors (14946028).

19869452 is a wasteful number, since it uses less digits than its factorization.

19869452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280 (or 6278 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 19869452 is about 4457.5163488203. The cubic root of 19869452 is about 270.8498689602.

The spelling of 19869452 in words is "nineteen million, eight hundred sixty-nine thousand, four hundred fifty-two".