20246550 has 72 divisors (see below), whose sum is σ = 52110504. Its totient is φ = 5201280.

The previous prime is 20246539. The next prime is 20246557. The reversal of 20246550 is 5564202.

It is a self number, because there is not a number n which added to its sum of digits gives 20246550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20246557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 277314 + ... + 277386.

It is an arithmetic number, because the mean of its divisors is an integer number (723757).

Almost surely, 2^20246550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20246550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26055252).

20246550 is an abundant number, since it is smaller than the sum of its proper divisors (31863954).

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

20246550 is a wasteful number, since it uses less digits than its factorization.

20246550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20246550 is about 4499.6166503381. The cubic root of 20246550 is about 272.5526088703.

The spelling of 20246550 in words is "twenty million, two hundred forty-six thousand, five hundred fifty".