44649920 has 112 divisors (see below), whose sum is σ = 125626368. Its totient is φ = 14791680.

The previous prime is 44649919. The next prime is 44649929. The reversal of 44649920 is 2994644.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44649929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69119 + ... + 69761.

It is an arithmetic number, because the mean of its divisors is an integer number (1121664).

Almost surely, 2^44649920 is an apocalyptic number.

44649920 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 44649920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62813184).

44649920 is an abundant number, since it is smaller than the sum of its proper divisors (80976448).

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

44649920 is a wasteful number, since it uses less digits than its factorization.

44649920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 44649920 is about 6682.0595627396. The cubic root of 44649920 is about 354.7645598834.

The spelling of 44649920 in words is "forty-four million, six hundred forty-nine thousand, nine hundred twenty".