561367828 has 48 divisors (see below), whose sum is σ = 1136185344. Its totient is φ = 237725280.

The previous prime is 561367823. The next prime is 561367837. The reversal of 561367828 is 828763165.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561367823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266975 + ... + 1267417.

It is an arithmetic number, because the mean of its divisors is an integer number (23670528).

Almost surely, 2^561367828 is an apocalyptic number.

It is an amenable number.

561367828 is an abundant number, since it is smaller than the sum of its proper divisors (574817516).

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

561367828 is a wasteful number, since it uses less digits than its factorization.

561367828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 890 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 561367828 is about 23693.2021474515. The cubic root of 561367828 is about 824.9276106671.

It can be divided in two parts, 5613 and 67828, that added together give a square (73441 = 271²).

The spelling of 561367828 in words is "five hundred sixty-one million, three hundred sixty-seven thousand, eight hundred twenty-eight".