20168550 has 36 divisors (see below), whose sum is σ = 54187380. Its totient is φ = 5378160.

The previous prime is 20168527. The next prime is 20168573. The reversal of 20168550 is 5586102.

It is an interprime number because it is at equal distance from previous prime (20168527) and next prime (20168573).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21960 + ... + 22859.

It is an arithmetic number, because the mean of its divisors is an integer number (1505205).

Almost surely, 2^20168550 is an apocalyptic number.

20168550 is an abundant number, since it is smaller than the sum of its proper divisors (34018830).

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

20168550 is a wasteful number, since it uses less digits than its factorization.

20168550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44837 (or 44829 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 20168550 is about 4490.9408813744. The cubic root of 20168550 is about 272.2021547211.

The spelling of 20168550 in words is "twenty million, one hundred sixty-eight thousand, five hundred fifty".