45020340 has 96 divisors (see below), whose sum is σ = 141039360. Its totient is φ = 11922048.

The previous prime is 45020333. The next prime is 45020347. The reversal of 45020340 is 4302054.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45020333) and next prime (45020347).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45020347) 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, 141862 + ... + 142178.

It is an arithmetic number, because the mean of its divisors is an integer number (1469160).

Almost surely, 2^45020340 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 45020340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70519680).

45020340 is an abundant number, since it is smaller than the sum of its proper divisors (96019020).

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

45020340 is a wasteful number, since it uses less digits than its factorization.

45020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 45020340 is about 6709.7198153127. The cubic root of 45020340 is about 355.7429129025.

Adding to 45020340 its reverse (4302054), we get a palindrome (49322394).

The spelling of 45020340 in words is "forty-five million, twenty thousand, three hundred forty".