20140463 has 8 divisors (see below), whose sum is σ = 23058432. Its totient is φ = 17232696.

The previous prime is 20140457. The next prime is 20140489. The reversal of 20140463 is 36404102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20140463 - 2¹² = 20136367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140423) 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, 2306 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (2882304).

Almost surely, 2^20140463 is an apocalyptic number.

20140463 is a deficient number, since it is larger than the sum of its proper divisors (2917969).

20140463 is an equidigital number, since it uses as much as digits as its factorization.

20140463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20140463 is about 4487.8127189088. The cubic root of 20140463 is about 272.0757385323.

Adding to 20140463 its reverse (36404102), we get a palindrome (56544565).

The spelling of 20140463 in words is "twenty million, one hundred forty thousand, four hundred sixty-three".