45204020 has 24 divisors (see below), whose sum is σ = 100513224. Its totient is φ = 17017856.

The previous prime is 45203959. The next prime is 45204023. The reversal of 45204020 is 2040254.

It can be written as a sum of positive squares in 4 ways, for example, as 12348196 + 32855824 = 3514^2 + 5732^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 45204020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45204023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66137 + ... + 66816.

It is an arithmetic number, because the mean of its divisors is an integer number (4188051).

Almost surely, 2^45204020 is an apocalyptic number.

It is an amenable number.

45204020 is an abundant number, since it is smaller than the sum of its proper divisors (55309204).

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

45204020 is a wasteful number, since it uses less digits than its factorization.

45204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132979 (or 132977 counting only the distinct ones).

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

The square root of 45204020 is about 6723.3934884104. The cubic root of 45204020 is about 356.2260589226.

Adding to 45204020 its reverse (2040254), we get a palindrome (47244274).

It can be divided in two parts, 45 and 204020, that multiplied together give a square (9180900 = 3030²).

The spelling of 45204020 in words is "forty-five million, two hundred four thousand, twenty".