45023620 has 24 divisors (see below), whose sum is σ = 94952088. Its totient is φ = 17932800.

The previous prime is 45023611. The next prime is 45023621. The reversal of 45023620 is 2632054.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5308416 + 39715204 = 2304^2 + 6302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45023591 and 45023600.

It is not an unprimeable number, because it can be changed into a prime (45023621) 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, 150 + ... + 9490.

It is an arithmetic number, because the mean of its divisors is an integer number (3956337).

Almost surely, 2^45023620 is an apocalyptic number.

It is an amenable number.

45023620 is an abundant number, since it is smaller than the sum of its proper divisors (49928468).

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

45023620 is a wasteful number, since it uses less digits than its factorization.

45023620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9591 (or 9589 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 45023620 is about 6709.9642323935. The cubic root of 45023620 is about 355.7515520230.

Adding to 45023620 its reverse (2632054), we get a palindrome (47655674).

The spelling of 45023620 in words is "forty-five million, twenty-three thousand, six hundred twenty".