20276463 has 4 divisors (see below), whose sum is σ = 27035288. Its totient is φ = 13517640.

The previous prime is 20276447. The next prime is 20276489. The reversal of 20276463 is 36467202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20276463 - 2⁴ = 20276447 is a prime.

It is a super-2 number, since 2×20276463² = 822269903580738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20276463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3379408 + ... + 3379413.

It is an arithmetic number, because the mean of its divisors is an integer number (6758822).

Almost surely, 2^20276463 is an apocalyptic number.

20276463 is a deficient number, since it is larger than the sum of its proper divisors (6758825).

20276463 is an equidigital number, since it uses as much as digits as its factorization.

20276463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6758824.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 20276463 is about 4502.9393733427. The cubic root of 20276463 is about 272.6867692476.

The spelling of 20276463 in words is "twenty million, two hundred seventy-six thousand, four hundred sixty-three".