244022640 has 80 divisors (see below), whose sum is σ = 789378048. Its totient is φ = 62242048.

The previous prime is 244022633. The next prime is 244022651. The reversal of 244022640 is 46220442.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 244022640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16584 + ... + 27623.

Almost surely, 2^244022640 is an apocalyptic number.

244022640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244022640 is an abundant number, since it is smaller than the sum of its proper divisors (545355408).

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

244022640 is a wasteful number, since it uses less digits than its factorization.

244022640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44246 (or 44240 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 244022640 is about 15621.2240237441. The cubic root of 244022640 is about 624.8993032438.

The spelling of 244022640 in words is "two hundred forty-four million, twenty-two thousand, six hundred forty".