224691378 has 16 divisors (see below), whose sum is σ = 473034720. Its totient is φ = 70955136.

The previous prime is 224691377. The next prime is 224691403. The reversal of 224691378 is 873196422.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (224691377) 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, 985375 + ... + 985602.

It is an arithmetic number, because the mean of its divisors is an integer number (29564670).

Almost surely, 2^224691378 is an apocalyptic number.

224691378 is an abundant number, since it is smaller than the sum of its proper divisors (248343342).

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

224691378 is a wasteful number, since it uses less digits than its factorization.

224691378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971001.

The product of its digits is 145152, while the sum is 42.

The square root of 224691378 is about 14989.7090698919. The cubic root of 224691378 is about 607.9419832250.

The spelling of 224691378 in words is "two hundred twenty-four million, six hundred ninety-one thousand, three hundred seventy-eight".