244891988 has 24 divisors (see below), whose sum is σ = 492129120. Its totient is φ = 105455520.

The previous prime is 244891981. The next prime is 244891991. The reversal of 244891988 is 889198442.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244891981) 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, 145631 + ... + 147302.

It is an arithmetic number, because the mean of its divisors is an integer number (20505380).

Almost surely, 2^244891988 is an apocalyptic number.

It is an amenable number.

244891988 is an abundant number, since it is smaller than the sum of its proper divisors (247237132).

244891988 is a wasteful number, since it uses less digits than its factorization.

244891988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292967 (or 292965 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 53.

The square root of 244891988 is about 15649.0251453565. The cubic root of 244891988 is about 625.6405064714.

The spelling of 244891988 in words is "two hundred forty-four million, eight hundred ninety-one thousand, nine hundred eighty-eight".