44787440 has 80 divisors (see below), whose sum is σ = 110189376. Its totient is φ = 16896000.

The previous prime is 44787433. The next prime is 44787443. The reversal of 44787440 is 4478744.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 44787394 and 44787403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44787443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185720 + ... + 185960.

Almost surely, 2^44787440 is an apocalyptic number.

44787440 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 44787440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55094688).

44787440 is an abundant number, since it is smaller than the sum of its proper divisors (65401936).

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

44787440 is a wasteful number, since it uses less digits than its factorization.

44787440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 38.

The square root of 44787440 is about 6692.3418920435. The cubic root of 44787440 is about 355.1284068976.

The spelling of 44787440 in words is "forty-four million, seven hundred eighty-seven thousand, four hundred forty".