20867463 has 30 divisors (see below), whose sum is σ = 32653544. Its totient is φ = 13279464.

The previous prime is 20867447. The next prime is 20867471. The reversal of 20867463 is 36476802.

It is not a de Polignac number, because 20867463 - 2⁴ = 20867447 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 (20867663) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 42606 + ... + 43092.

Almost surely, 2^20867463 is an apocalyptic number.

20867463 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20867463 is a deficient number, since it is larger than the sum of its proper divisors (11786081).

20867463 is an equidigital number, since it uses as much as digits as its factorization.

20867463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 20867463 is about 4568.0918335778. The cubic root of 20867463 is about 275.3107803321.

The spelling of 20867463 in words is "twenty million, eight hundred sixty-seven thousand, four hundred sixty-three".