19413872 has 10 divisors (see below), whose sum is σ = 37614408. Its totient is φ = 9706928.

The previous prime is 19413857. The next prime is 19413893. The reversal of 19413872 is 27831491.

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 as a sum of consecutive naturals, namely, 606668 + ... + 606699.

Almost surely, 2^19413872 is an apocalyptic number.

It is an amenable number.

19413872 is a deficient number, since it is larger than the sum of its proper divisors (18200536).

19413872 is a wasteful number, since it uses less digits than its factorization.

19413872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213375 (or 1213369 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 19413872 is about 4406.1175653857. The cubic root of 19413872 is about 268.7637676740.

The spelling of 19413872 in words is "nineteen million, four hundred thirteen thousand, eight hundred seventy-two".