20452633 has 4 divisors (see below), whose sum is σ = 20464848. Its totient is φ = 20440420.

The previous prime is 20452577. The next prime is 20452639. The reversal of 20452633 is 33625402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20452633 - 2²¹ = 18355481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20452598 and 20452607.

It is not an unprimeable number, because it can be changed into a prime (20452639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3103 + ... + 7108.

It is an arithmetic number, because the mean of its divisors is an integer number (5116212).

Almost surely, 2^20452633 is an apocalyptic number.

It is an amenable number.

20452633 is a deficient number, since it is larger than the sum of its proper divisors (12215).

20452633 is a wasteful number, since it uses less digits than its factorization.

20452633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12214.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 20452633 is about 4522.4587339190. The cubic root of 20452633 is about 273.4742301875.

The spelling of 20452633 in words is "twenty million, four hundred fifty-two thousand, six hundred thirty-three".