90212224 has 16 divisors (see below), whose sum is σ = 179719920. Its totient is φ = 45106048.

The previous prime is 90212207. The next prime is 90212249. The reversal of 90212224 is 42221209.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 90212195 and 90212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352264 + ... + 352519.

It is an arithmetic number, because the mean of its divisors is an integer number (11232495).

Almost surely, 2^90212224 is an apocalyptic number.

It is an amenable number.

90212224 is a deficient number, since it is larger than the sum of its proper divisors (89507696).

90212224 is an equidigital number, since it uses as much as digits as its factorization.

90212224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704797 (or 704785 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 90212224 is about 9498.0115813785. The cubic root of 90212224 is about 448.4924432002.

The spelling of 90212224 in words is "ninety million, two hundred twelve thousand, two hundred twenty-four".