20704419 has 24 divisors (see below), whose sum is σ = 31938192. Its totient is φ = 12879360.

The previous prime is 20704417. The next prime is 20704447. The reversal of 20704419 is 91440702.

It is a happy number.

It is not a de Polignac number, because 20704419 - 2¹ = 20704417 is a prime.

It is a super-2 number, since 2×20704419² = 857345932255122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20704392 and 20704401.

It is not an unprimeable number, because it can be changed into a prime (20704417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19527 + ... + 20559.

It is an arithmetic number, because the mean of its divisors is an integer number (1330758).

Almost surely, 2^20704419 is an apocalyptic number.

20704419 is a deficient number, since it is larger than the sum of its proper divisors (11233773).

20704419 is a wasteful number, since it uses less digits than its factorization.

20704419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20704419 is about 4550.2108742343. The cubic root of 20704419 is about 274.5918750459.

The spelling of 20704419 in words is "twenty million, seven hundred four thousand, four hundred nineteen".