44861220 has 36 divisors (see below), whose sum is σ = 136079580. Its totient is φ = 11962944.

The previous prime is 44861209. The next prime is 44861221. The reversal of 44861220 is 2216844.

44861220 is a `hidden beast` number, since 4 + 48 + 612 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33246756 + 11614464 = 5766^2 + 3408^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (44861221) 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 11 ways as a sum of consecutive naturals, for example, 124435 + ... + 124794.

Almost surely, 2^44861220 is an apocalyptic number.

It is an amenable number.

44861220 is an abundant number, since it is smaller than the sum of its proper divisors (91218360).

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

44861220 is a wasteful number, since it uses less digits than its factorization.

44861220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249244 (or 249239 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 44861220 is about 6697.8518944509. The cubic root of 44861220 is about 355.3233052852.

The spelling of 44861220 in words is "forty-four million, eight hundred sixty-one thousand, two hundred twenty".