20834020 has 12 divisors (see below), whose sum is σ = 43751484. Its totient is φ = 8333600.

The previous prime is 20834003. The next prime is 20834029. The reversal of 20834020 is 2043802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10797796 + 10036224 = 3286^2 + 3168^2 .

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 3 ways as a sum of consecutive naturals, for example, 520831 + ... + 520870.

It is an arithmetic number, because the mean of its divisors is an integer number (3645957).

Almost surely, 2^20834020 is an apocalyptic number.

20834020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20834020 is an abundant number, since it is smaller than the sum of its proper divisors (22917464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20834020 is a wasteful number, since it uses less digits than its factorization.

20834020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041710 (or 1041708 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20834020 is about 4564.4298658211. The cubic root of 20834020 is about 275.1636271392.

Adding to 20834020 its reverse (2043802), we get a palindrome (22877822).

The spelling of 20834020 in words is "twenty million, eight hundred thirty-four thousand, twenty".