20010465 has 12 divisors (see below), whose sum is σ = 34684884. Its totient is φ = 10672224.

The previous prime is 20010457. The next prime is 20010467. The reversal of 20010465 is 56401002.

It is a happy number.

20010465 is a `hidden beast` number, since 200 + 1 + 0 + 465 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3825936 + 16184529 = 1956^2 + 4023^2 .

It is not a de Polignac number, because 20010465 - 2³ = 20010457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20010467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222294 + ... + 222383.

It is an arithmetic number, because the mean of its divisors is an integer number (2890407).

Almost surely, 2^20010465 is an apocalyptic number.

It is an amenable number.

20010465 is a deficient number, since it is larger than the sum of its proper divisors (14674419).

20010465 is a wasteful number, since it uses less digits than its factorization.

20010465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444688 (or 444685 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20010465 is about 4473.3058245553. The cubic root of 20010465 is about 271.4890973716.

Adding to 20010465 its reverse (56401002), we get a palindrome (76411467).

The spelling of 20010465 in words is "twenty million, ten thousand, four hundred sixty-five".