19497648 has 40 divisors (see below), whose sum is σ = 53022400. Its totient is φ = 6156864.

The previous prime is 19497641. The next prime is 19497659. The reversal of 19497648 is 84679491.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 19497597 and 19497606.

It is not an unprimeable number, because it can be changed into a prime (19497641) 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, 9778 + ... + 11601.

It is an arithmetic number, because the mean of its divisors is an integer number (1325560).

Almost surely, 2^19497648 is an apocalyptic number.

It is an amenable number.

19497648 is an abundant number, since it is smaller than the sum of its proper divisors (33524752).

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

19497648 is a wasteful number, since it uses less digits than its factorization.

19497648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21409 (or 21403 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 19497648 is about 4415.6141135747. The cubic root of 19497648 is about 269.1498085316.

The spelling of 19497648 in words is "nineteen million, four hundred ninety-seven thousand, six hundred forty-eight".