44642820 has 48 divisors (see below), whose sum is σ = 125935488. Its totient is φ = 11815680.

The previous prime is 44642791. The next prime is 44642827. The reversal of 44642820 is 2824644.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (44642827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5505 + ... + 10935.

It is an arithmetic number, because the mean of its divisors is an integer number (2623656).

Almost surely, 2^44642820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44642820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62967744).

44642820 is an abundant number, since it is smaller than the sum of its proper divisors (81292668).

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

44642820 is a wasteful number, since it uses less digits than its factorization.

44642820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580 (or 5578 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 44642820 is about 6681.5282682931. The cubic root of 44642820 is about 354.7457546097.

The spelling of 44642820 in words is "forty-four million, six hundred forty-two thousand, eight hundred twenty".