44002020 has 96 divisors (see below), whose sum is σ = 130507776. Its totient is φ = 11059200.

The previous prime is 44002009. The next prime is 44002033. The reversal of 44002020 is 2020044.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 44001987 and 44002005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75972 + ... + 76548.

It is an arithmetic number, because the mean of its divisors is an integer number (1359456).

Almost surely, 2^44002020 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 44002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65253888).

44002020 is an abundant number, since it is smaller than the sum of its proper divisors (86505756).

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

44002020 is a wasteful number, since it uses less digits than its factorization.

44002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 44002020 is about 6633.4018421923. The cubic root of 44002020 is about 353.0402359527.

Adding to 44002020 its reverse (2020044), we get a palindrome (46022064).

The spelling of 44002020 in words is "forty-four million, two thousand, twenty".