45432020 has 24 divisors (see below), whose sum is σ = 95541768. Its totient is φ = 18147200.

The previous prime is 45432017. The next prime is 45432029. The reversal of 45432020 is 2023454.

It can be written as a sum of positive squares in 4 ways, for example, as 18267076 + 27164944 = 4274^2 + 5212^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 45431983 and 45432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45432029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20150 + ... + 22290.

It is an arithmetic number, because the mean of its divisors is an integer number (3980907).

Almost surely, 2^45432020 is an apocalyptic number.

It is an amenable number.

45432020 is an abundant number, since it is smaller than the sum of its proper divisors (50109748).

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

45432020 is a wasteful number, since it uses less digits than its factorization.

45432020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211 (or 3209 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 45432020 is about 6740.3278851997. The cubic root of 45432020 is about 356.8239657098.

Adding to 45432020 its reverse (2023454), we get a palindrome (47455474).

The spelling of 45432020 in words is "forty-five million, four hundred thirty-two thousand, twenty".