90223758 has 24 divisors (see below), whose sum is σ = 198691896. Its totient is φ = 29581200.

The previous prime is 90223753. The next prime is 90223781. The reversal of 90223758 is 85732209.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90223753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39988 + ... + 42183.

It is an arithmetic number, because the mean of its divisors is an integer number (8278829).

Almost surely, 2^90223758 is an apocalyptic number.

90223758 is an abundant number, since it is smaller than the sum of its proper divisors (108468138).

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

90223758 is a wasteful number, since it uses less digits than its factorization.

90223758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82240 (or 82237 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 90223758 is about 9498.6187416908. The cubic root of 90223758 is about 448.5115562471.

The spelling of 90223758 in words is "ninety million, two hundred twenty-three thousand, seven hundred fifty-eight".