244221990 has 32 divisors (see below), whose sum is σ = 590616576. Its totient is φ = 64627680.

The previous prime is 244221907. The next prime is 244222019. The reversal of 244221990 is 99122442.

It is a Curzon number.

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, 27142 + ... + 35001.

It is an arithmetic number, because the mean of its divisors is an integer number (18456768).

Almost surely, 2^244221990 is an apocalyptic number.

244221990 is an abundant number, since it is smaller than the sum of its proper divisors (346394586).

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

244221990 is a wasteful number, since it uses less digits than its factorization.

244221990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62284.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 244221990 is about 15627.6034631034. The cubic root of 244221990 is about 625.0694237549.

The spelling of 244221990 in words is "two hundred forty-four million, two hundred twenty-one thousand, nine hundred ninety".