45440340 has 96 divisors (see below), whose sum is σ = 140192640. Its totient is φ = 10996480.

The previous prime is 45440321. The next prime is 45440347. The reversal of 45440340 is 4304454.

It is a self number, because there is not a number n which added to its sum of digits gives 45440340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45440347) 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, 79576 + ... + 80144.

It is an arithmetic number, because the mean of its divisors is an integer number (1460340).

Almost surely, 2^45440340 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 45440340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70096320).

45440340 is an abundant number, since it is smaller than the sum of its proper divisors (94752300).

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

45440340 is a wasteful number, since it uses less digits than its factorization.

45440340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 45440340 is about 6740.9450376041. The cubic root of 45440340 is about 356.8457461940.

Adding to 45440340 its reverse (4304454), we get a palindrome (49744794).

The spelling of 45440340 in words is "forty-five million, four hundred forty thousand, three hundred forty".