90268281 has 12 divisors (see below), whose sum is σ = 130494000. Its totient is φ = 60129720.

The previous prime is 90268279. The next prime is 90268313. The reversal of 90268281 is 18286209.

It is not a de Polignac number, because 90268281 - 2¹ = 90268279 is a prime.

It is a super-2 number, since 2×90268281² = 16296725109389922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90260281) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10146 + ... + 16836.

It is an arithmetic number, because the mean of its divisors is an integer number (10874500).

Almost surely, 2^90268281 is an apocalyptic number.

It is an amenable number.

90268281 is a deficient number, since it is larger than the sum of its proper divisors (40225719).

90268281 is a wasteful number, since it uses less digits than its factorization.

90268281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8196 (or 8193 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 90268281 is about 9500.9621091761. The cubic root of 90268281 is about 448.5853202483.

The spelling of 90268281 in words is "ninety million, two hundred sixty-eight thousand, two hundred eighty-one".