90230392 has 64 divisors (see below), whose sum is σ = 205344000. Its totient is φ = 36308736.

The previous prime is 90230389. The next prime is 90230417. The reversal of 90230392 is 29303209.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 90230392.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 145459 + ... + 146077.

It is an arithmetic number, because the mean of its divisors is an integer number (3208500).

Almost surely, 2^90230392 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 90230392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102672000).

90230392 is an abundant number, since it is smaller than the sum of its proper divisors (115113608).

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

90230392 is a wasteful number, since it uses less digits than its factorization.

90230392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 90230392 is about 9498.9679439400. The cubic root of 90230392 is about 448.5225487425.

The spelling of 90230392 in words is "ninety million, two hundred thirty thousand, three hundred ninety-two".