20830494 has 16 divisors (see below), whose sum is σ = 42547968. Its totient is φ = 6795672.

The previous prime is 20830489. The next prime is 20830499. The reversal of 20830494 is 49403802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20830489) and next prime (20830499).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20830499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36652 + ... + 37215.

It is an arithmetic number, because the mean of its divisors is an integer number (2659248).

Almost surely, 2^20830494 is an apocalyptic number.

20830494 is an abundant number, since it is smaller than the sum of its proper divisors (21717474).

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

20830494 is a wasteful number, since it uses less digits than its factorization.

20830494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73919.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20830494 is about 4564.0436018951. The cubic root of 20830494 is about 275.1481031438.

The spelling of 20830494 in words is "twenty million, eight hundred thirty thousand, four hundred ninety-four".