44420400 has 180 divisors, whose sum is σ = 160210232. Its totient is φ = 11819520.

The previous prime is 44420399. The next prime is 44420417. The reversal of 44420400 is 402444.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 96972 + ... + 97428.

Almost surely, 2^44420400 is an apocalyptic number.

44420400 is a gapful number since it is divisible by the number (40) 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 44420400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80105116).

44420400 is an abundant number, since it is smaller than the sum of its proper divisors (115789832).

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

44420400 is a wasteful number, since it uses less digits than its factorization.

44420400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 44420400 is about 6664.8630893665. The cubic root of 44420400 is about 354.1556339508.

Adding to 44420400 its reverse (402444), we get a palindrome (44822844).

The spelling of 44420400 in words is "forty-four million, four hundred twenty thousand, four hundred".