561630432 has 48 divisors (see below), whose sum is σ = 1608308352. Its totient is φ = 170190720.

The previous prime is 561630409. The next prime is 561630463. The reversal of 561630432 is 234036165.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 561630432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264868 + ... + 266979.

It is an arithmetic number, because the mean of its divisors is an integer number (33506424).

Almost surely, 2^561630432 is an apocalyptic number.

It is an amenable number.

561630432 is an abundant number, since it is smaller than the sum of its proper divisors (1046677920).

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

561630432 is a wasteful number, since it uses less digits than its factorization.

561630432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531871 (or 531863 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 561630432 is about 23698.7432578185. The cubic root of 561630432 is about 825.0562224311.

Adding to 561630432 its reverse (234036165), we get a palindrome (795666597).

The spelling of 561630432 in words is "five hundred sixty-one million, six hundred thirty thousand, four hundred thirty-two".