20463513 has 16 divisors (see below), whose sum is σ = 32824320. Its totient is φ = 11077776.

The previous prime is 20463467. The next prime is 20463517. The reversal of 20463513 is 31536402.

It is a happy number.

It is not a de Polignac number, because 20463513 - 2¹³ = 20455321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20463517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25245 + ... + 26042.

It is an arithmetic number, because the mean of its divisors is an integer number (2051520).

Almost surely, 2^20463513 is an apocalyptic number.

It is an amenable number.

20463513 is a deficient number, since it is larger than the sum of its proper divisors (12360807).

20463513 is a wasteful number, since it uses less digits than its factorization.

20463513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51316.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20463513 is about 4523.6614594817. The cubic root of 20463513 is about 273.5227141192.

Adding to 20463513 its reverse (31536402), we get a palindrome (51999915).

The spelling of 20463513 in words is "twenty million, four hundred sixty-three thousand, five hundred thirteen".