20830797 has 32 divisors (see below), whose sum is σ = 35199360. Its totient is φ = 12061440.

The previous prime is 20830751. The next prime is 20830807. The reversal of 20830797 is 79703802.

It is not a de Polignac number, because 20830797 - 2¹¹ = 20828749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20830597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4222 + ... + 7712.

It is an arithmetic number, because the mean of its divisors is an integer number (1099980).

Almost surely, 2^20830797 is an apocalyptic number.

20830797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20830797 is a deficient number, since it is larger than the sum of its proper divisors (14368563).

20830797 is a wasteful number, since it uses less digits than its factorization.

20830797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530 (or 3524 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 20830797 is about 4564.0767960235. The cubic root of 20830797 is about 275.1494372372.

The spelling of 20830797 in words is "twenty million, eight hundred thirty thousand, seven hundred ninety-seven".