20045452 has 12 divisors (see below), whose sum is σ = 40090960. Its totient is φ = 8590896.

The previous prime is 20045449. The next prime is 20045461. The reversal of 20045452 is 25454002.

20045452 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 357927 + ... + 357982.

Almost surely, 2^20045452 is an apocalyptic number.

It is an amenable number.

20045452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20045452 is a wasteful number, since it uses less digits than its factorization.

20045452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715920 (or 715918 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20045452 is about 4477.2147592002. The cubic root of 20045452 is about 271.6472322697.

Adding to 20045452 its reverse (25454002), we get a palindrome (45499454).

The spelling of 20045452 in words is "twenty million, forty-five thousand, four hundred fifty-two".