44220646 has 16 divisors (see below), whose sum is σ = 67906080. Its totient is φ = 21591360.

The previous prime is 44220643. The next prime is 44220647. The reversal of 44220646 is 64602244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44220643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14050 + ... + 16906.

It is an arithmetic number, because the mean of its divisors is an integer number (4244130).

Almost surely, 2^44220646 is an apocalyptic number.

44220646 is the 3555-th centered heptagonal number.

44220646 is a deficient number, since it is larger than the sum of its proper divisors (23685434).

44220646 is a wasteful number, since it uses less digits than its factorization.

44220646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 44220646 is about 6649.8606000427. The cubic root of 44220646 is about 353.6239689720.

The spelling of 44220646 in words is "forty-four million, two hundred twenty thousand, six hundred forty-six".