19129812 has 48 divisors (see below), whose sum is σ = 48451200. Its totient is φ = 5839488.

The previous prime is 19129801. The next prime is 19129829. The reversal of 19129812 is 21892191.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22833 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (1009400).

Almost surely, 2^19129812 is an apocalyptic number.

19129812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19129812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24225600).

19129812 is an abundant number, since it is smaller than the sum of its proper divisors (29321388).

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

19129812 is a wasteful number, since it uses less digits than its factorization.

19129812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 990 counting only the distinct ones).

The product of its digits is 2592, while the sum is 33.

The square root of 19129812 is about 4373.7640539929. The cubic root of 19129812 is about 267.4464888450.

It can be divided in two parts, 191 and 29812, that added together give a palindrome (30003).

The spelling of 19129812 in words is "nineteen million, one hundred twenty-nine thousand, eight hundred twelve".