44002812 has 48 divisors (see below), whose sum is σ = 117834752. Its totient is φ = 12519360.

The previous prime is 44002811. The next prime is 44002837. The reversal of 44002812 is 21820044.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44002811) 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, 21798 + ... + 23730.

Almost surely, 2^44002812 is an apocalyptic number.

44002812 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

44002812 is an abundant number, since it is smaller than the sum of its proper divisors (73831940).

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

44002812 is a wasteful number, since it uses less digits than its factorization.

44002812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 44002812 is about 6633.4615397996. The cubic root of 44002812 is about 353.0423540842.

Adding to 44002812 its reverse (21820044), we get a palindrome (65822856).

The spelling of 44002812 in words is "forty-four million, two thousand, eight hundred twelve".