20846550 has 24 divisors (see below), whose sum is σ = 51699816. Its totient is φ = 5559040.

The previous prime is 20846549. The next prime is 20846587. The reversal of 20846550 is 5564802.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69339 + ... + 69638.

It is an arithmetic number, because the mean of its divisors is an integer number (2154159).

Almost surely, 2^20846550 is an apocalyptic number.

20846550 is an abundant number, since it is smaller than the sum of its proper divisors (30853266).

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

20846550 is a wasteful number, since it uses less digits than its factorization.

20846550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138992 (or 138987 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 20846550 is about 4565.8022296197. The cubic root of 20846550 is about 275.2187790700.

The spelling of 20846550 in words is "twenty million, eight hundred forty-six thousand, five hundred fifty".