244243920 has 40 divisors (see below), whose sum is σ = 757156896. Its totient is φ = 65131648.

The previous prime is 244243903. The next prime is 244243933. The reversal of 244243920 is 29342442.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508602 + ... + 509081.

Almost surely, 2^244243920 is an apocalyptic number.

244243920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244243920 is an abundant number, since it is smaller than the sum of its proper divisors (512912976).

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

244243920 is a wasteful number, since it uses less digits than its factorization.

244243920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017699 (or 1017693 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 244243920 is about 15628.3050904441. The cubic root of 244243920 is about 625.0881326383.

The spelling of 244243920 in words is "two hundred forty-four million, two hundred forty-three thousand, nine hundred twenty".