244974840 has 128 divisors (see below), whose sum is σ = 836697600. Its totient is φ = 56798720.

The previous prime is 244974833. The next prime is 244974853. The reversal of 244974840 is 48479442.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 244974792 and 244974801.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 26326 + ... + 34394.

It is an arithmetic number, because the mean of its divisors is an integer number (6536700).

Almost surely, 2^244974840 is an apocalyptic number.

244974840 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 244974840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418348800).

244974840 is an abundant number, since it is smaller than the sum of its proper divisors (591722760).

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

244974840 is a wasteful number, since it uses less digits than its factorization.

244974840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8117 (or 8113 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 244974840 is about 15651.6721151448. The cubic root of 244974840 is about 625.7110542030.

The spelling of 244974840 in words is "two hundred forty-four million, nine hundred seventy-four thousand, eight hundred forty".