90260220 has 48 divisors (see below), whose sum is σ = 260886528. Its totient is φ = 23292480.

The previous prime is 90260201. The next prime is 90260249. The reversal of 90260220 is 2206209.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22404 + ... + 26123.

It is an arithmetic number, because the mean of its divisors is an integer number (5435136).

Almost surely, 2^90260220 is an apocalyptic number.

It is an amenable number.

90260220 is an abundant number, since it is smaller than the sum of its proper divisors (170626308).

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

90260220 is a wasteful number, since it uses less digits than its factorization.

90260220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48570 (or 48568 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 90260220 is about 9500.5378795098. The cubic root of 90260220 is about 448.5719668907.

Adding to 90260220 its reverse (2206209), we get a palindrome (92466429).

The spelling of 90260220 in words is "ninety million, two hundred sixty thousand, two hundred twenty".