402322240 has 56 divisors (see below), whose sum is σ = 959754240. Its totient is φ = 160639488.

The previous prime is 402322237. The next prime is 402322259. The reversal of 402322240 is 42223204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313921 + ... + 315199.

Almost surely, 2^402322240 is an apocalyptic number.

402322240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402322240 is an abundant number, since it is smaller than the sum of its proper divisors (557432000).

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

402322240 is a wasteful number, since it uses less digits than its factorization.

402322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279 (or 2269 counting only the distinct ones).

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

The square root of 402322240 is about 20057.9719812348. The cubic root of 402322240 is about 738.2294168059.

Adding to 402322240 its reverse (42223204), we get a palindrome (444545444).

The spelling of 402322240 in words is "four hundred two million, three hundred twenty-two thousand, two hundred forty".