44421018 has 16 divisors (see below), whose sum is σ = 89216640. Its totient is φ = 14744576.

The previous prime is 44421007. The next prime is 44421043. The reversal of 44421018 is 81012444.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14055 + ... + 16922.

It is an arithmetic number, because the mean of its divisors is an integer number (5576040).

Almost surely, 2^44421018 is an apocalyptic number.

44421018 is an abundant number, since it is smaller than the sum of its proper divisors (44795622).

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

44421018 is a wasteful number, since it uses less digits than its factorization.

44421018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31221.

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 44421018 is about 6664.9094517480. The cubic root of 44421018 is about 354.1572763431.

It can be divided in two parts, 4442 and 1018, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 44421018 in words is "forty-four million, four hundred twenty-one thousand, eighteen".