224246778 has 64 divisors (see below), whose sum is σ = 543406080. Its totient is φ = 60264000.

The previous prime is 224246773. The next prime is 224246783. The reversal of 224246778 is 877642422.

It is an interprime number because it is at equal distance from previous prime (224246773) and next prime (224246783).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (224246773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119568 + ... + 121428.

It is an arithmetic number, because the mean of its divisors is an integer number (8490720).

Almost surely, 2^224246778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224246778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271703040).

224246778 is an abundant number, since it is smaller than the sum of its proper divisors (319159302).

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

224246778 is a wasteful number, since it uses less digits than its factorization.

224246778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043.

The product of its digits is 301056, while the sum is 42.

The square root of 224246778 is about 14974.8715520368. The cubic root of 224246778 is about 607.5407373315.

The spelling of 224246778 in words is "two hundred twenty-four million, two hundred forty-six thousand, seven hundred seventy-eight".