45430020 has 72 divisors (see below), whose sum is σ = 139898304. Its totient is φ = 11930688.

The previous prime is 45430003. The next prime is 45430027. The reversal of 45430020 is 2003454.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 45429975 and 45430002.

It is not an unprimeable number, because it can be changed into a prime (45430027) 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 23 ways as a sum of consecutive naturals, for example, 10177 + ... + 13943.

It is an arithmetic number, because the mean of its divisors is an integer number (1943032).

Almost surely, 2^45430020 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 45430020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69949152).

45430020 is an abundant number, since it is smaller than the sum of its proper divisors (94468284).

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

45430020 is a wasteful number, since it uses less digits than its factorization.

45430020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849 (or 3844 counting only the distinct ones).

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

The square root of 45430020 is about 6740.1795228317. The cubic root of 45430020 is about 356.8187296200.

Adding to 45430020 its reverse (2003454), we get a palindrome (47433474).

The spelling of 45430020 in words is "forty-five million, four hundred thirty thousand, twenty".