90210212 has 12 divisors (see below), whose sum is σ = 158427696. Its totient is φ = 44945160.

The previous prime is 90210203. The next prime is 90210247. The reversal of 90210212 is 21201209.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38714 + ... + 40977.

It is an arithmetic number, because the mean of its divisors is an integer number (13202308).

Almost surely, 2^90210212 is an apocalyptic number.

It is an amenable number.

90210212 is a deficient number, since it is larger than the sum of its proper divisors (68217484).

90210212 is a wasteful number, since it uses less digits than its factorization.

90210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79978 (or 79976 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 90210212 is about 9497.9056638819. The cubic root of 90210212 is about 448.4891089385.

The spelling of 90210212 in words is "ninety million, two hundred ten thousand, two hundred twelve".