45320044 has 48 divisors (see below), whose sum is σ = 99429120. Its totient is φ = 17559360.

The previous prime is 45320029. The next prime is 45320053. The reversal of 45320044 is 44002354.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 45319997 and 45320024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82579 + ... + 83125.

It is an arithmetic number, because the mean of its divisors is an integer number (2071440).

Almost surely, 2^45320044 is an apocalyptic number.

45320044 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 45320044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49714560).

45320044 is an abundant number, since it is smaller than the sum of its proper divisors (54109076).

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

45320044 is a wasteful number, since it uses less digits than its factorization.

45320044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 45320044 is about 6732.0163398495. The cubic root of 45320044 is about 356.5305706431.

Adding to 45320044 its reverse (44002354), we get a palindrome (89322398).

The spelling of 45320044 in words is "forty-five million, three hundred twenty thousand, forty-four".