402881344 has 28 divisors (see below), whose sum is σ = 802843200. Its totient is φ = 200590208.

The previous prime is 402881333. The next prime is 402881357. The reversal of 402881344 is 443188204.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127 + ... + 28465.

Almost surely, 2^402881344 is an apocalyptic number.

It is an amenable number.

402881344 is a deficient number, since it is larger than the sum of its proper divisors (399961856).

402881344 is a wasteful number, since it uses less digits than its factorization.

402881344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26590 (or 26580 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 402881344 is about 20071.9043441324. The cubic root of 402881344 is about 738.5712290228.

It can be divided in two parts, 402881 and 344, that added together give a square (403225 = 635²).

The spelling of 402881344 in words is "four hundred two million, eight hundred eighty-one thousand, three hundred forty-four".