224273428 has 18 divisors (see below), whose sum is σ = 403413738. Its totient is φ = 109017360.

The previous prime is 224273419. The next prime is 224273431. The reversal of 224273428 is 824372422.

It can be written as a sum of positive squares in only one way, i.e., 218211984 + 6061444 = 14772^2 + 2462^2 .

It is a junction number, because it is equal to n+sod(n) for n = 224273393 and 224273402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181573 + ... + 182803.

Almost surely, 2^224273428 is an apocalyptic number.

It is an amenable number.

224273428 is a deficient number, since it is larger than the sum of its proper divisors (179140310).

224273428 is an equidigital number, since it uses as much as digits as its factorization.

224273428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503 (or 1270 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

The square root of 224273428 is about 14975.7613495942. The cubic root of 224273428 is about 607.5648035551.

The spelling of 224273428 in words is "two hundred twenty-four million, two hundred seventy-three thousand, four hundred twenty-eight".