20450132 has 6 divisors (see below), whose sum is σ = 35787738. Its totient is φ = 10225064.

The previous prime is 20450117. The next prime is 20450141. The reversal of 20450132 is 23105402.

It can be written as a sum of positive squares in only one way, i.e., 12418576 + 8031556 = 3524^2 + 2834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20450132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2556263 + ... + 2556270.

It is an arithmetic number, because the mean of its divisors is an integer number (5964623).

Almost surely, 2^20450132 is an apocalyptic number.

It is an amenable number.

20450132 is a deficient number, since it is larger than the sum of its proper divisors (15337606).

20450132 is a wasteful number, since it uses less digits than its factorization.

20450132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112537 (or 5112535 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20450132 is about 4522.1822165853. The cubic root of 20450132 is about 273.4630826916.

Adding to 20450132 its reverse (23105402), we get a palindrome (43555534).

The spelling of 20450132 in words is "twenty million, four hundred fifty thousand, one hundred thirty-two".