90268257 has 8 divisors (see below), whose sum is σ = 120493440. Its totient is φ = 60110960.

The previous prime is 90268219. The next prime is 90268267. The reversal of 90268257 is 75286209.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90268257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90268267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13782 + ... + 19247.

It is an arithmetic number, because the mean of its divisors is an integer number (15061680).

Almost surely, 2^90268257 is an apocalyptic number.

It is an amenable number.

90268257 is a deficient number, since it is larger than the sum of its proper divisors (30225183).

90268257 is a wasteful number, since it uses less digits than its factorization.

90268257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33943.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 90268257 is about 9500.9608461460. The cubic root of 90268257 is about 448.5852804926.

It can be divided in two parts, 90268 and 257, that added together give a triangular number (90525 = T₄₂₅).

The spelling of 90268257 in words is "ninety million, two hundred sixty-eight thousand, two hundred fifty-seven".