19130040 has 64 divisors (see below), whose sum is σ = 63770400. Its totient is φ = 5101056.

The previous prime is 19130029. The next prime is 19130047. The reversal of 19130040 is 4003191.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 19129995 and 19130022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19130047) 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 15 ways as a sum of consecutive naturals, for example, 7777 + ... + 9936.

Almost surely, 2^19130040 is an apocalyptic number.

19130040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19130040 is an abundant number, since it is smaller than the sum of its proper divisors (44640360).

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

19130040 is a wasteful number, since it uses less digits than its factorization.

19130040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17733 (or 17723 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 19130040 is about 4373.7901184213. The cubic root of 19130040 is about 267.4475513673.

The spelling of 19130040 in words is "nineteen million, one hundred thirty thousand, forty".