244242840 has 128 divisors (see below), whose sum is σ = 752716800. Its totient is φ = 63383040.

The previous prime is 244242827. The next prime is 244242899. The reversal of 244242840 is 48242442.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 244242798 and 244242807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 928549 + ... + 928811.

It is an arithmetic number, because the mean of its divisors is an integer number (5880600).

Almost surely, 2^244242840 is an apocalyptic number.

244242840 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 244242840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376358400).

244242840 is an abundant number, since it is smaller than the sum of its proper divisors (508473960).

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

244242840 is a wasteful number, since it uses less digits than its factorization.

244242840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

The square root of 244242840 is about 15628.2705377147. The cubic root of 244242840 is about 625.0872112968.

The spelling of 244242840 in words is "two hundred forty-four million, two hundred forty-two thousand, eight hundred forty".