44819640 has 96 divisors (see below), whose sum is σ = 152025120. Its totient is φ = 11430144.

The previous prime is 44819603. The next prime is 44819641. The reversal of 44819640 is 4691844.

It is a happy number.

44819640 is a `hidden beast` number, since 4 + 4 + 8 + 1 + 9 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 44819595 and 44819604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44819641) 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, 5574 + ... + 10986.

It is an arithmetic number, because the mean of its divisors is an integer number (1583595).

Almost surely, 2^44819640 is an apocalyptic number.

44819640 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 44819640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76012560).

44819640 is an abundant number, since it is smaller than the sum of its proper divisors (107205480).

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

44819640 is a wasteful number, since it uses less digits than its factorization.

44819640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453 (or 5446 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 44819640 is about 6694.7471946295. The cubic root of 44819640 is about 355.2134932176.

The spelling of 44819640 in words is "forty-four million, eight hundred nineteen thousand, six hundred forty".