20834019 has 12 divisors (see below), whose sum is σ = 30734496. Its totient is φ = 13593552.

The previous prime is 20834003. The next prime is 20834029. The reversal of 20834019 is 91043802.

It is not a de Polignac number, because 20834019 - 2⁴ = 20834003 is a prime.

It is a super-2 number, since 2×20834019² = 868112695384722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20833983 and 20834001.

It is not an unprimeable number, because it can be changed into a prime (20834029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24204 + ... + 25049.

It is an arithmetic number, because the mean of its divisors is an integer number (2561208).

Almost surely, 2^20834019 is an apocalyptic number.

20834019 is a deficient number, since it is larger than the sum of its proper divisors (9900477).

20834019 is a wasteful number, since it uses less digits than its factorization.

20834019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49306 (or 49303 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20834019 is about 4564.4297562784. The cubic root of 20834019 is about 275.1636227367.

The spelling of 20834019 in words is "twenty million, eight hundred thirty-four thousand, nineteen".