19040000 has 180 divisors, whose sum is σ = 57469104. Its totient is φ = 6144000.

The previous prime is 19039997. The next prime is 19040009. The reversal of 19040000 is 4091.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19040009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1119992 + ... + 1120008.

Almost surely, 2^19040000 is an apocalyptic number.

19040000 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 19040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28734552).

19040000 is an abundant number, since it is smaller than the sum of its proper divisors (38429104).

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

19040000 is an frugal number, since it uses more digits than its factorization.

19040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 19040000 is about 4363.4848458543. The cubic root of 19040000 is about 267.0272898738.

Adding to 19040000 its reverse (4091), we get a palindrome (19044091).

The spelling of 19040000 in words is "nineteen million, forty thousand".