90880212 has 12 divisors (see below), whose sum is σ = 212053856. Its totient is φ = 30293400.

The previous prime is 90880193. The next prime is 90880219. The reversal of 90880212 is 21208809.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 90880212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90880219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3786664 + ... + 3786687.

Almost surely, 2^90880212 is an apocalyptic number.

It is an amenable number.

90880212 is an abundant number, since it is smaller than the sum of its proper divisors (121173644).

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

90880212 is a wasteful number, since it uses less digits than its factorization.

90880212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573358 (or 7573356 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 90880212 is about 9533.1113493969. Note that the first 3 decimals coincide. The cubic root of 90880212 is about 449.5966954435.

The spelling of 90880212 in words is "ninety million, eight hundred eighty thousand, two hundred twelve".