402038256 has 80 divisors (see below), whose sum is σ = 1077137408. Its totient is φ = 129081600.

The previous prime is 402038249. The next prime is 402038267. The reversal of 402038256 is 652830204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402750 + ... + 403746.

Almost surely, 2^402038256 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 402038256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538568704).

402038256 is an abundant number, since it is smaller than the sum of its proper divisors (675099152).

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

402038256 is a wasteful number, since it uses less digits than its factorization.

402038256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 402038256 is about 20050.8916509965. The cubic root of 402038256 is about 738.0556798789.

The spelling of 402038256 in words is "four hundred two million, thirty-eight thousand, two hundred fifty-six".