401255244 has 72 divisors (see below), whose sum is σ = 1103691680. Its totient is φ = 122176512.

The previous prime is 401255237. The next prime is 401255249. The reversal of 401255244 is 442552104.

401255244 is a `hidden beast` number, since 401 + 255 + 2 + 4 + 4 = 666.

It is a super-2 number, since 2×401255244² = 322011541674999072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401255249) 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, 40977 + ... + 49815.

Almost surely, 2^401255244 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 401255244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551845840).

401255244 is an abundant number, since it is smaller than the sum of its proper divisors (702436436).

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

401255244 is a wasteful number, since it uses less digits than its factorization.

401255244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8959 (or 8954 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 401255244 is about 20031.3565192176. The cubic root of 401255244 is about 737.5762213283.

It can be divided in two parts, 40125 and 5244, that added together give a square (45369 = 213²).

The spelling of 401255244 in words is "four hundred one million, two hundred fifty-five thousand, two hundred forty-four".