90223488 has 144 divisors (see below), whose sum is σ = 276815760. Its totient is φ = 28200960.

The previous prime is 90223487. The next prime is 90223489. The reversal of 90223488 is 88432209.

It is an interprime number because it is at equal distance from previous prime (90223487) and next prime (90223489).

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×90223488³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90223487) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 332793 + ... + 333063.

Almost surely, 2^90223488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90223488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138407880).

90223488 is an abundant number, since it is smaller than the sum of its proper divisors (186592272).

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

90223488 is a wasteful number, since it uses less digits than its factorization.

90223488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 90223488 is about 9498.6045290874. The cubic root of 90223488 is about 448.5111088474.

The spelling of 90223488 in words is "ninety million, two hundred twenty-three thousand, four hundred eighty-eight".