20145463 has 8 divisors (see below), whose sum is σ = 21742448. Its totient is φ = 18555264.

The previous prime is 20145449. The next prime is 20145487. The reversal of 20145463 is 36454102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20145463 - 2⁹ = 20144951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695 + ... + 8527.

It is an arithmetic number, because the mean of its divisors is an integer number (2717806).

Almost surely, 2^20145463 is an apocalyptic number.

20145463 is a deficient number, since it is larger than the sum of its proper divisors (1596985).

20145463 is a wasteful number, since it uses less digits than its factorization.

20145463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20145463 is about 4488.3697485836. The cubic root of 20145463 is about 272.0982515224.

Adding to 20145463 its reverse (36454102), we get a palindrome (56599565).

The spelling of 20145463 in words is "twenty million, one hundred forty-five thousand, four hundred sixty-three".