224474172520 has 64 divisors (see below), whose sum is σ = 546034925520. Its totient is φ = 82560221184.

The previous prime is 224474172493. The next prime is 224474172523. The reversal of 224474172520 is 25271474422.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 67374508356 + 157099664164 = 259566^2 + 396358^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (224474172523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706207 + ... + 973486.

Almost surely, 2^224474172520 is an apocalyptic number.

224474172520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224474172520 is an abundant number, since it is smaller than the sum of its proper divisors (321560753000).

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

224474172520 is a wasteful number, since it uses less digits than its factorization.

224474172520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679974 (or 1679970 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 40.

The spelling of 224474172520 in words is "two hundred twenty-four billion, four hundred seventy-four million, one hundred seventy-two thousand, five hundred twenty".