224394140 has 24 divisors (see below), whose sum is σ = 471987600. Its totient is φ = 89612928.

The previous prime is 224394139. The next prime is 224394197. The reversal of 224394140 is 41493422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136 + ... + 21584.

It is an arithmetic number, because the mean of its divisors is an integer number (19666150).

Almost surely, 2^224394140 is an apocalyptic number.

224394140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224394140 is an abundant number, since it is smaller than the sum of its proper divisors (247593460).

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

224394140 is a wasteful number, since it uses less digits than its factorization.

224394140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18101 (or 18099 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 224394140 is about 14979.7910532824. The cubic root of 224394140 is about 607.6737883912.

The spelling of 224394140 in words is "two hundred twenty-four million, three hundred ninety-four thousand, one hundred forty".