19019040 has 48 divisors (see below), whose sum is σ = 59911488. Its totient is φ = 5071616.

The previous prime is 19019017. The next prime is 19019069. The reversal of 19019040 is 4091091.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 19019040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19332 + ... + 20291.

It is an arithmetic number, because the mean of its divisors is an integer number (1248156).

Almost surely, 2^19019040 is an apocalyptic number.

19019040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19019040 is an abundant number, since it is smaller than the sum of its proper divisors (40892448).

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

19019040 is a wasteful number, since it uses less digits than its factorization.

19019040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39641 (or 39633 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 19019040 is about 4361.0824344422. The cubic root of 19019040 is about 266.9292690928.

The spelling of 19019040 in words is "nineteen million, nineteen thousand, forty".