561290734 has 32 divisors (see below), whose sum is σ = 912124800. Its totient is φ = 258086400.

The previous prime is 561290711. The next prime is 561290747. The reversal of 561290734 is 437092165.

It is a junction number, because it is equal to n+sod(n) for n = 561290693 and 561290702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270252 + ... + 272320.

It is an arithmetic number, because the mean of its divisors is an integer number (28503900).

Almost surely, 2^561290734 is an apocalyptic number.

561290734 is a deficient number, since it is larger than the sum of its proper divisors (350834066).

561290734 is a wasteful number, since it uses less digits than its factorization.

561290734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 561290734 is about 23691.5751692453. The cubic root of 561290734 is about 824.8898458377.

The spelling of 561290734 in words is "five hundred sixty-one million, two hundred ninety thousand, seven hundred thirty-four".