90223683012 has 36 divisors (see below), whose sum is σ = 228466290780. Its totient is φ = 30021699072.

The previous prime is 90223682993. The next prime is 90223683019. The reversal of 90223683012 is 21038632209.

It can be written as a sum of positive squares in 2 ways, for example, as 9677837376 + 80545845636 = 98376^2 + 283806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90223683019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2181813 + ... + 2222780.

It is an arithmetic number, because the mean of its divisors is an integer number (6346285855).

Almost surely, 2^90223683012 is an apocalyptic number.

It is an amenable number.

90223683012 is an abundant number, since it is smaller than the sum of its proper divisors (138242607768).

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

90223683012 is a wasteful number, since it uses less digits than its factorization.

90223683012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405172 (or 4405167 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 90223683012 in words is "ninety billion, two hundred twenty-three million, six hundred eighty-three thousand, twelve".