19483540 has 12 divisors (see below), whose sum is σ = 40915476. Its totient is φ = 7793408.

The previous prime is 19483537. The next prime is 19483577. The reversal of 19483540 is 4538491.

It can be written as a sum of positive squares in 2 ways, for example, as 7064964 + 12418576 = 2658^2 + 3524^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19483496 and 19483505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487069 + ... + 487108.

It is an arithmetic number, because the mean of its divisors is an integer number (3409623).

Almost surely, 2^19483540 is an apocalyptic number.

19483540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19483540 is an abundant number, since it is smaller than the sum of its proper divisors (21431936).

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

19483540 is a wasteful number, since it uses less digits than its factorization.

19483540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974186 (or 974184 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 19483540 is about 4414.0163117052. The cubic root of 19483540 is about 269.0848762261.

The spelling of 19483540 in words is "nineteen million, four hundred eighty-three thousand, five hundred forty".