45454240 has 108 divisors (see below), whose sum is σ = 119186802. Its totient is φ = 16373760.

The previous prime is 45454237. The next prime is 45454267. The reversal of 45454240 is 4245454.

It can be written as a sum of positive squares in 9 ways, for example, as 15904144 + 29550096 = 3988^2 + 5436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45454199 and 45454208.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1108620 + ... + 1108660.

Almost surely, 2^45454240 is an apocalyptic number.

45454240 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 45454240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59593401).

45454240 is an abundant number, since it is smaller than the sum of its proper divisors (73732562).

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

45454240 is a wasteful number, since it uses less digits than its factorization.

45454240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 45454240 is about 6741.9759714790. The cubic root of 45454240 is about 356.8821283323.

Adding to 45454240 its reverse (4245454), we get a palindrome (49699694).

The spelling of 45454240 in words is "forty-five million, four hundred fifty-four thousand, two hundred forty".