20863419 has 8 divisors (see below), whose sum is σ = 27839040. Its totient is φ = 13898376.

The previous prime is 20863411. The next prime is 20863429. The reversal of 20863419 is 91436802.

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

It is not a de Polignac number, because 20863419 - 2³ = 20863411 is a prime.

It is a super-2 number, since 2×20863419² = 870564504739122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20863419.

It is not an unprimeable number, because it can be changed into a prime (20863411) 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, 5992 + ... + 8810.

It is an arithmetic number, because the mean of its divisors is an integer number (3479880).

Almost surely, 2^20863419 is an apocalyptic number.

20863419 is a deficient number, since it is larger than the sum of its proper divisors (6975621).

20863419 is a wasteful number, since it uses less digits than its factorization.

20863419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20863419 is about 4567.6491765459. The cubic root of 20863419 is about 275.2929946095.

The spelling of 20863419 in words is "twenty million, eight hundred sixty-three thousand, four hundred nineteen".