19348140 has 72 divisors (see below), whose sum is σ = 63029232. Its totient is φ = 4421760.

The previous prime is 19348117. The next prime is 19348141. The reversal of 19348140 is 4184391.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 19348098 and 19348107.

It is not an unprimeable number, because it can be changed into a prime (19348141) 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 23 ways as a sum of consecutive naturals, for example, 351 + ... + 6230.

It is an arithmetic number, because the mean of its divisors is an integer number (875406).

Almost surely, 2^19348140 is an apocalyptic number.

19348140 is a gapful number since it is divisible by the number (10) 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 19348140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31514616).

19348140 is an abundant number, since it is smaller than the sum of its proper divisors (43681092).

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

19348140 is a wasteful number, since it uses less digits than its factorization.

19348140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6607 (or 6598 counting only the distinct ones).

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

The square root of 19348140 is about 4398.6520662585. The cubic root of 19348140 is about 268.4600955369.

The spelling of 19348140 in words is "nineteen million, three hundred forty-eight thousand, one hundred forty".