90222010 has 8 divisors (see below), whose sum is σ = 162399636. Its totient is φ = 36088800.

The previous prime is 90222007. The next prime is 90222019. The reversal of 90222010 is 1022209.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83704201 + 6517809 = 9149^2 + 2553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90222010² = 16280022176880200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90222019) 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, 4511091 + ... + 4511110.

Almost surely, 2^90222010 is an apocalyptic number.

90222010 is a deficient number, since it is larger than the sum of its proper divisors (72177626).

90222010 is a wasteful number, since it uses less digits than its factorization.

90222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9022208.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 90222010 is about 9498.5267278668. The cubic root of 90222010 is about 448.5086597326.

Adding to 90222010 its reverse (1022209), we get a palindrome (91244219).

It can be divided in two parts, 90 and 222010, that multiplied together give a square (19980900 = 4470²).

The spelling of 90222010 in words is "ninety million, two hundred twenty-two thousand, ten".