224385978 has 8 divisors (see below), whose sum is σ = 448771968. Its totient is φ = 74795324.

The previous prime is 224385977. The next prime is 224385979. The reversal of 224385978 is 879583422.

It is an interprime number because it is at equal distance from previous prime (224385977) and next prime (224385979).

It is a sphenic number, since it is the product of 3 distinct primes.

224385978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (224385971) 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, 18698826 + ... + 18698837.

It is an arithmetic number, because the mean of its divisors is an integer number (56096496).

Almost surely, 2^224385978 is an apocalyptic number.

224385978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

224385978 is a wasteful number, since it uses less digits than its factorization.

224385978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37397668.

The product of its digits is 967680, while the sum is 48.

The square root of 224385978 is about 14979.5186170985. The cubic root of 224385978 is about 607.6664205613. Note that the first 3 decimals are identical.

The spelling of 224385978 in words is "two hundred twenty-four million, three hundred eighty-five thousand, nine hundred seventy-eight".