44999820 has 96 divisors (see below), whose sum is σ = 141120000. Its totient is φ = 11904192.

The previous prime is 44999797. The next prime is 44999827. The reversal of 44999820 is 2899944.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44999827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89931 + ... + 90429.

It is an arithmetic number, because the mean of its divisors is an integer number (1470000).

Almost surely, 2^44999820 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 44999820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70560000).

44999820 is an abundant number, since it is smaller than the sum of its proper divisors (96120180).

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

44999820 is a wasteful number, since it uses less digits than its factorization.

44999820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 44999820 is about 6708.1905160781. The cubic root of 44999820 is about 355.6888561959.

The spelling of 44999820 in words is "forty-four million, nine hundred ninety-nine thousand, eight hundred twenty".