20196550 has 24 divisors (see below), whose sum is σ = 40981752. Its totient is φ = 7344000.

The previous prime is 20196529. The next prime is 20196577. The reversal of 20196550 is 5569102.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17811 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (1707573).

Almost surely, 2^20196550 is an apocalyptic number.

20196550 is an abundant number, since it is smaller than the sum of its proper divisors (20785202).

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

20196550 is a wasteful number, since it uses less digits than its factorization.

20196550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36744 (or 36739 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 20196550 is about 4494.0571869971. The cubic root of 20196550 is about 272.3280625660.

The spelling of 20196550 in words is "twenty million, one hundred ninety-six thousand, five hundred fifty".