244155240 has 144 divisors (see below), whose sum is σ = 923122980. Its totient is φ = 55802880.

The previous prime is 244155239. The next prime is 244155251. The reversal of 244155240 is 42551442.

244155240 is a `hidden beast` number, since 2 + 4 + 415 + 5 + 240 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 237591396 + 6563844 = 15414^2 + 2562^2 .

It is a super-2 number, since 2×244155240² = 119223562438915200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10720 + ... + 24560.

Almost surely, 2^244155240 is an apocalyptic number.

244155240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 244155240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461561490).

244155240 is an abundant number, since it is smaller than the sum of its proper divisors (678967740).

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

244155240 is a wasteful number, since it uses less digits than its factorization.

244155240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13872 (or 13858 counting only the distinct ones).

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

The square root of 244155240 is about 15625.4676730010. The cubic root of 244155240 is about 625.0124712178.

The spelling of 244155240 in words is "two hundred forty-four million, one hundred fifty-five thousand, two hundred forty".