44213004 has 72 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 13317600.

The previous prime is 44212997. The next prime is 44213009. The reversal of 44213004 is 40031244.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (44213009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122977 + ... + 123335.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^44213004 is an apocalyptic number.

44213004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44213004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61326720).

44213004 is an abundant number, since it is smaller than the sum of its proper divisors (78440436).

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

44213004 is a wasteful number, since it uses less digits than its factorization.

44213004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 44213004 is about 6649.2859767046. The cubic root of 44213004 is about 353.6035972655.

Adding to 44213004 its reverse (40031244), we get a palindrome (84244248).

The spelling of 44213004 in words is "forty-four million, two hundred thirteen thousand, four".