224040402 has 24 divisors (see below), whose sum is σ = 498541836. Its totient is φ = 72661536.

The previous prime is 224040389. The next prime is 224040409. The reversal of 224040402 is 204040422.

224040402 is a `hidden beast` number, since 224 + 0 + 40 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 160503561 + 63536841 = 12669^2 + 7971^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (224040409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167533 + ... + 168864.

Almost surely, 2^224040402 is an apocalyptic number.

224040402 is an abundant number, since it is smaller than the sum of its proper divisors (274501434).

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

224040402 is a wasteful number, since it uses less digits than its factorization.

224040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336442 (or 336439 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 224040402 is about 14967.9792223266. The cubic root of 224040402 is about 607.3543053550.

Adding to 224040402 its reverse (204040422), we get a palindrome (428080824).

The spelling of 224040402 in words is "two hundred twenty-four million, forty thousand, four hundred two".