90223798182 has 128 divisors (see below), whose sum is σ = 228863729664. Its totient is φ = 23103810048.

The previous prime is 90223798157. The next prime is 90223798211. The reversal of 90223798182 is 28189732209.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3715693 + ... + 3739895.

It is an arithmetic number, because the mean of its divisors is an integer number (1787997888).

Almost surely, 2^90223798182 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90223798182, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114431864832).

90223798182 is an abundant number, since it is smaller than the sum of its proper divisors (138639931482).

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

90223798182 is a wasteful number, since it uses less digits than its factorization.

90223798182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24482.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 90223798182 in words is "ninety billion, two hundred twenty-three million, seven hundred ninety-eight thousand, one hundred eighty-two".