20830835 has 16 divisors (see below), whose sum is σ = 25613280. Its totient is φ = 16258560.

The previous prime is 20830819. The next prime is 20830837. The reversal of 20830835 is 53803802.

It is not a de Polignac number, because 20830835 - 2⁴ = 20830819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20830798 and 20830807.

It is not an unprimeable number, because it can be changed into a prime (20830837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70949 + ... + 71241.

It is an arithmetic number, because the mean of its divisors is an integer number (1600830).

Almost surely, 2^20830835 is an apocalyptic number.

20830835 is a deficient number, since it is larger than the sum of its proper divisors (4782445).

20830835 is a wasteful number, since it uses less digits than its factorization.

20830835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20830835 is about 4564.0809589664. The cubic root of 20830835 is about 275.1496045483.

The spelling of 20830835 in words is "twenty million, eight hundred thirty thousand, eight hundred thirty-five".