45206420 has 72 divisors (see below), whose sum is σ = 111502944. Its totient is φ = 15349824.

The previous prime is 45206411. The next prime is 45206443. The reversal of 45206420 is 2460254.

45206420 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 23 ways as a sum of consecutive naturals, for example, 159599 + ... + 159881.

It is an arithmetic number, because the mean of its divisors is an integer number (1548652).

Almost surely, 2^45206420 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 45206420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55751472).

45206420 is an abundant number, since it is smaller than the sum of its proper divisors (66296524).

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

45206420 is a wasteful number, since it uses less digits than its factorization.

45206420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 45206420 is about 6723.5719673400. The cubic root of 45206420 is about 356.2323631363.

Adding to 45206420 its reverse (2460254), we get a palindrome (47666674).

The spelling of 45206420 in words is "forty-five million, two hundred six thousand, four hundred twenty".