19844130 has 32 divisors (see below), whose sum is σ = 47822400. Its totient is φ = 5269952.

The previous prime is 19844129. The next prime is 19844141. The reversal of 19844130 is 3144891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6841 + ... + 9299.

It is an arithmetic number, because the mean of its divisors is an integer number (1494450).

Almost surely, 2^19844130 is an apocalyptic number.

19844130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19844130 is an abundant number, since it is smaller than the sum of its proper divisors (27978270).

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

19844130 is a wasteful number, since it uses less digits than its factorization.

19844130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 19844130 is about 4454.6750723257. The cubic root of 19844130 is about 270.7347613406.

The spelling of 19844130 in words is "nineteen million, eight hundred forty-four thousand, one hundred thirty".