90163206 has 96 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 24230016.

The previous prime is 90163193. The next prime is 90163207. The reversal of 90163206 is 60236109.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 90163206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90163207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57055 + ... + 58613.

It is an arithmetic number, because the mean of its divisors is an integer number (2555280).

Almost surely, 2^90163206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90163206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122653440).

90163206 is an abundant number, since it is smaller than the sum of its proper divisors (155143674).

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

90163206 is a wasteful number, since it uses less digits than its factorization.

90163206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600 (or 1588 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90163206 is about 9495.4307959144. The cubic root of 90163206 is about 448.4111970578.

The spelling of 90163206 in words is "ninety million, one hundred sixty-three thousand, two hundred six".