402255056 has 80 divisors (see below), whose sum is σ = 926845440. Its totient is φ = 165473280.

The previous prime is 402255053. The next prime is 402255109. The reversal of 402255056 is 650552204.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402255053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879980 + ... + 880436.

It is an arithmetic number, because the mean of its divisors is an integer number (11585568).

Almost surely, 2^402255056 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 402255056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463422720).

402255056 is an abundant number, since it is smaller than the sum of its proper divisors (524590384).

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

402255056 is a wasteful number, since it uses less digits than its factorization.

402255056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 402255056 is about 20056.2971657283. The cubic root of 402255056 is about 738.1883220803.

The spelling of 402255056 in words is "four hundred two million, two hundred fifty-five thousand, fifty-six".