20830550 has 48 divisors (see below), whose sum is σ = 42393120. Its totient is φ = 7568640.

The previous prime is 20830549. The next prime is 20830573. The reversal of 20830550 is 5503802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47231 + ... + 47669.

It is an arithmetic number, because the mean of its divisors is an integer number (883190).

Almost surely, 2^20830550 is an apocalyptic number.

20830550 is an abundant number, since it is smaller than the sum of its proper divisors (21562570).

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

20830550 is a wasteful number, since it uses less digits than its factorization.

20830550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20830550 is about 4564.0497368017. The cubic root of 20830550 is about 275.1483497099.

The spelling of 20830550 in words is "twenty million, eight hundred thirty thousand, five hundred fifty".