402222430 has 32 divisors (see below), whose sum is σ = 742794624. Its totient is φ = 156732576.

The previous prime is 402222409. The next prime is 402222433. The reversal of 402222430 is 34222204.

It is a junction number, because it is equal to n+sod(n) for n = 402222398 and 402222407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402222433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199809 + ... + 201811.

It is an arithmetic number, because the mean of its divisors is an integer number (23212332).

Almost surely, 2^402222430 is an apocalyptic number.

402222430 is a deficient number, since it is larger than the sum of its proper divisors (340572194).

402222430 is a wasteful number, since it uses less digits than its factorization.

402222430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402222430 is about 20055.4837887297. The cubic root of 402222430 is about 738.1683639443.

Adding to 402222430 its reverse (34222204), we get a palindrome (436444634).

The spelling of 402222430 in words is "four hundred two million, two hundred twenty-two thousand, four hundred thirty".