19530040 has 32 divisors (see below), whose sum is σ = 44100000. Its totient is φ = 7784064.

The previous prime is 19530037. The next prime is 19530047. The reversal of 19530040 is 4003591.

It is a junction number, because it is equal to n+sod(n) for n = 19529993 and 19530020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19530047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13261 + ... + 14659.

It is an arithmetic number, because the mean of its divisors is an integer number (1378125).

Almost surely, 2^19530040 is an apocalyptic number.

19530040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19530040 is an abundant number, since it is smaller than the sum of its proper divisors (24569960).

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

19530040 is a wasteful number, since it uses less digits than its factorization.

19530040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 19530040 is about 4419.2804844228. The cubic root of 19530040 is about 269.2987748251.

The spelling of 19530040 in words is "nineteen million, five hundred thirty thousand, forty".