561008238 has 16 divisors (see below), whose sum is σ = 1282304640. Its totient is φ = 160288056.

The previous prime is 561008221. The next prime is 561008291. The reversal of 561008238 is 832800165.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 561008199 and 561008208.

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, 6678628 + ... + 6678711.

It is an arithmetic number, because the mean of its divisors is an integer number (80144040).

Almost surely, 2^561008238 is an apocalyptic number.

561008238 is an abundant number, since it is smaller than the sum of its proper divisors (721296402).

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

561008238 is a wasteful number, since it uses less digits than its factorization.

561008238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13357351.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 561008238 is about 23685.6124683319. The cubic root of 561008238 is about 824.7514343913.

The spelling of 561008238 in words is "five hundred sixty-one million, eight thousand, two hundred thirty-eight".