90223133 has 32 divisors (see below), whose sum is σ = 122072832. Its totient is φ = 64396800.

The previous prime is 90223103. The next prime is 90223151. The reversal of 90223133 is 33132209.

90223133 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 90223133 - 2¹⁴ = 90206749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90223099 and 90223108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90223103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172913 + ... + 173433.

It is an arithmetic number, because the mean of its divisors is an integer number (3814776).

Almost surely, 2^90223133 is an apocalyptic number.

It is an amenable number.

90223133 is a deficient number, since it is larger than the sum of its proper divisors (31849699).

90223133 is a wasteful number, since it uses less digits than its factorization.

90223133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 90223133 is about 9498.5858421136. The cubic root of 90223133 is about 448.5105205983.

The spelling of 90223133 in words is "ninety million, two hundred twenty-three thousand, one hundred thirty-three".