244131640 has 32 divisors (see below), whose sum is σ = 562074480. Its totient is φ = 95380992.

The previous prime is 244131631. The next prime is 244131647. The reversal of 244131640 is 46131442.

244131640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244131647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69249 + ... + 72688.

Almost surely, 2^244131640 is an apocalyptic number.

244131640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244131640 is an abundant number, since it is smaller than the sum of its proper divisors (317942840).

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

244131640 is a wasteful number, since it uses less digits than its factorization.

244131640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141991 (or 141987 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 244131640 is about 15624.7124773546. The cubic root of 244131640 is about 624.9923327059.

The spelling of 244131640 in words is "two hundred forty-four million, one hundred thirty-one thousand, six hundred forty".