402445324 has 24 divisors (see below), whose sum is σ = 727701408. Its totient is φ = 194638080.

The previous prime is 402445321. The next prime is 402445339. The reversal of 402445324 is 423544204.

It is a junction number, because it is equal to n+sod(n) for n = 402445292 and 402445301.

It is not an unprimeable number, because it can be changed into a prime (402445321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684 + ... + 28420.

It is an arithmetic number, because the mean of its divisors is an integer number (30320892).

Almost surely, 2^402445324 is an apocalyptic number.

It is an amenable number.

402445324 is a deficient number, since it is larger than the sum of its proper divisors (325256084).

402445324 is a wasteful number, since it uses less digits than its factorization.

402445324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26865 (or 26863 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 402445324 is about 20061.0399531031. The cubic root of 402445324 is about 738.3046922576.

Adding to 402445324 its reverse (423544204), we get a palindrome (825989528).

The spelling of 402445324 in words is "four hundred two million, four hundred forty-five thousand, three hundred twenty-four".