561237384 has 32 divisors (see below), whose sum is σ = 1414149120. Its totient is φ = 185605056.

The previous prime is 561237373. The next prime is 561237389. The reversal of 561237384 is 483732165.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (561237389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89019 + ... + 95114.

It is an arithmetic number, because the mean of its divisors is an integer number (44192160).

Almost surely, 2^561237384 is an apocalyptic number.

It is an amenable number.

561237384 is an abundant number, since it is smaller than the sum of its proper divisors (852911736).

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

561237384 is a wasteful number, since it uses less digits than its factorization.

561237384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184269 (or 184265 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 561237384 is about 23690.4492148207. The cubic root of 561237384 is about 824.8637100849.

The spelling of 561237384 in words is "five hundred sixty-one million, two hundred thirty-seven thousand, three hundred eighty-four".