1563720048 has 120 divisors (see below), whose sum is σ = 4903297776. Its totient is φ = 461030400.

The previous prime is 1563720047. The next prime is 1563720071. The reversal of 1563720048 is 8400273651.

1563720048 is a `hidden beast` number, since 15 + 637 + 2 + 0 + 0 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1563719994 and 1563720021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563720043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45268 + ... + 71948.

Almost surely, 2^1563720048 is an apocalyptic number.

1563720048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1563720048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451648888).

1563720048 is an abundant number, since it is smaller than the sum of its proper divisors (3339577728).

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

1563720048 is a wasteful number, since it uses less digits than its factorization.

1563720048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26743 (or 26734 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1563720048 is about 39543.9002628724. The cubic root of 1563720048 is about 1160.6991544232.

Adding to 1563720048 its reverse (8400273651), we get a palindrome (9963993699).

The spelling of 1563720048 in words is "one billion, five hundred sixty-three million, seven hundred twenty thousand, forty-eight".