19550648 has 16 divisors (see below), whose sum is σ = 39477480. Its totient is φ = 9023328.

The previous prime is 19550623. The next prime is 19550659. The reversal of 19550648 is 84605591.

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, 93890 + ... + 94097.

Almost surely, 2^19550648 is an apocalyptic number.

It is an amenable number.

19550648 is an abundant number, since it is smaller than the sum of its proper divisors (19926832).

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

19550648 is a wasteful number, since it uses less digits than its factorization.

19550648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188006 (or 188002 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 19550648 is about 4421.6114709459. The cubic root of 19550648 is about 269.3934624326.

The spelling of 19550648 in words is "nineteen million, five hundred fifty thousand, six hundred forty-eight".