20454265 has 16 divisors (see below), whose sum is σ = 27288576. Its totient is φ = 14616000.

The previous prime is 20454263. The next prime is 20454277. The reversal of 20454265 is 56245402.

It is not a de Polignac number, because 20454265 - 2¹ = 20454263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20454263) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3061 + ... + 7090.

It is an arithmetic number, because the mean of its divisors is an integer number (1705536).

Almost surely, 2^20454265 is an apocalyptic number.

It is an amenable number.

20454265 is a deficient number, since it is larger than the sum of its proper divisors (6834311).

20454265 is a wasteful number, since it uses less digits than its factorization.

20454265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 20454265 is about 4522.6391631436. The cubic root of 20454265 is about 273.4815038732.

Adding to 20454265 its reverse (56245402), we get a palindrome (76699667).

The spelling of 20454265 in words is "twenty million, four hundred fifty-four thousand, two hundred sixty-five".