6390244 has 12 divisors (see below), whose sum is σ = 12780544. Its totient is φ = 2738664.

The previous prime is 6390239. The next prime is 6390257. The reversal of 6390244 is 4420936.

6390244 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 228223 = 6390244 / (6 + 3 + 9 + 0 + 2 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114084 + ... + 114139.

Almost surely, 2^6390244 is an apocalyptic number.

It is an amenable number.

6390244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6390244 is a wasteful number, since it uses less digits than its factorization.

6390244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228234 (or 228232 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6390244 is about 2527.8931939463. The cubic root of 6390244 is about 185.5691650742.

The spelling of 6390244 in words is "six million, three hundred ninety thousand, two hundred forty-four".