1563236420 has 24 divisors (see below), whose sum is σ = 3284354304. Its totient is φ = 624997856.

The previous prime is 1563236413. The next prime is 1563236449. The reversal of 1563236420 is 246323651.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27437 + ... + 62283.

It is an arithmetic number, because the mean of its divisors is an integer number (136848096).

Almost surely, 2^1563236420 is an apocalyptic number.

1563236420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1563236420 is an abundant number, since it is smaller than the sum of its proper divisors (1721117884).

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

1563236420 is a wasteful number, since it uses less digits than its factorization.

1563236420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37099 (or 37097 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 1563236420 is about 39537.7847128541. The cubic root of 1563236420 is about 1160.5794815758.

The spelling of 1563236420 in words is "one billion, five hundred sixty-three million, two hundred thirty-six thousand, four hundred twenty".