561189740 has 12 divisors (see below), whose sum is σ = 1178498496. Its totient is φ = 224475888.

The previous prime is 561189679. The next prime is 561189743. The reversal of 561189740 is 47981165.

It is not an unprimeable number, because it can be changed into a prime (561189743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14029724 + ... + 14029763.

It is an arithmetic number, because the mean of its divisors is an integer number (98208208).

Almost surely, 2^561189740 is an apocalyptic number.

It is an amenable number.

561189740 is an abundant number, since it is smaller than the sum of its proper divisors (617308756).

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

561189740 is a wasteful number, since it uses less digits than its factorization.

561189740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28059496 (or 28059494 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 561189740 is about 23689.4436405754. The cubic root of 561189740 is about 824.8403682573.

The spelling of 561189740 in words is "five hundred sixty-one million, one hundred eighty-nine thousand, seven hundred forty".