402343344 has 120 divisors (see below), whose sum is σ = 1219890672. Its totient is φ = 123056640.

The previous prime is 402343343. The next prime is 402343349. The reversal of 402343344 is 443343204.

It is a super-2 number, since 2×402343344² = 323760332922204672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402343343) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 368239 + ... + 369329.

Almost surely, 2^402343344 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 402343344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609945336).

402343344 is an abundant number, since it is smaller than the sum of its proper divisors (817547328).

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

402343344 is a wasteful number, since it uses less digits than its factorization.

402343344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

The square root of 402343344 is about 20058.4980494552. The cubic root of 402343344 is about 738.2423246359.

Adding to 402343344 its reverse (443343204), we get a palindrome (845686548).

The spelling of 402343344 in words is "four hundred two million, three hundred forty-three thousand, three hundred forty-four".