45240020 has 48 divisors (see below), whose sum is σ = 110436480. Its totient is φ = 15245184.

The previous prime is 45240001. The next prime is 45240031. The reversal of 45240020 is 2004254.

45240020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5522 + ... + 10998.

It is an arithmetic number, because the mean of its divisors is an integer number (2300760).

Almost surely, 2^45240020 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 45240020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55218240).

45240020 is an abundant number, since it is smaller than the sum of its proper divisors (65196460).

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

45240020 is a wasteful number, since it uses less digits than its factorization.

45240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552 (or 5550 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 45240020 is about 6726.0701750725. The cubic root of 45240020 is about 356.3205987097.

Adding to 45240020 its reverse (2004254), we get a palindrome (47244274).

The spelling of 45240020 in words is "forty-five million, two hundred forty thousand, twenty".