402203424 has 192 divisors, whose sum is σ = 1277337600. Its totient is φ = 108380160.

The previous prime is 402203387. The next prime is 402203429. The reversal of 402203424 is 424302204.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 402203424.

It is not an unprimeable number, because it can be changed into a prime (402203429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 895552 + ... + 896000.

It is an arithmetic number, because the mean of its divisors is an integer number (6652800).

Almost surely, 2^402203424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402203424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638668800).

402203424 is an abundant number, since it is smaller than the sum of its proper divisors (875134176).

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

402203424 is a wasteful number, since it uses less digits than its factorization.

402203424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 402203424 is about 20055.0099476415. The cubic root of 402203424 is about 738.1567370037.

Adding to 402203424 its reverse (424302204), we get a palindrome (826505628).

The spelling of 402203424 in words is "four hundred two million, two hundred three thousand, four hundred twenty-four".