224320428 has 30 divisors (see below), whose sum is σ = 586418756. Its totient is φ = 74773368.

The previous prime is 224320427. The next prime is 224320429. The reversal of 224320428 is 824023422.

It is an interprime number because it is at equal distance from previous prime (224320427) and next prime (224320429).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (224320427) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 345850 + ... + 346497.

Almost surely, 2^224320428 is an apocalyptic number.

It is an amenable number.

224320428 is an abundant number, since it is smaller than the sum of its proper divisors (362098328).

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

224320428 is a wasteful number, since it uses less digits than its factorization.

224320428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692363 (or 692352 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 224320428 is about 14977.3304697466. The cubic root of 224320428 is about 607.6072421556.

The spelling of 224320428 in words is "two hundred twenty-four million, three hundred twenty thousand, four hundred twenty-eight".