403868256 has 96 divisors (see below), whose sum is σ = 1217462400. Its totient is φ = 115937280.

The previous prime is 403868249. The next prime is 403868273. The reversal of 403868256 is 652868304.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10000 + ... + 30128.

It is an arithmetic number, because the mean of its divisors is an integer number (12681900).

Almost surely, 2^403868256 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 403868256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608731200).

403868256 is an abundant number, since it is smaller than the sum of its proper divisors (813594144).

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

403868256 is a wasteful number, since it uses less digits than its factorization.

403868256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20172 (or 20164 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 403868256 is about 20096.4737205312. The cubic root of 403868256 is about 739.1738137497.

The spelling of 403868256 in words is "four hundred three million, eight hundred sixty-eight thousand, two hundred fifty-six".