90402328 has 32 divisors (see below), whose sum is σ = 187284960. Its totient is φ = 40691200.

The previous prime is 90402289. The next prime is 90402329. The reversal of 90402328 is 82320409.

It is a junction number, because it is equal to n+sod(n) for n = 90402296 and 90402305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90402329) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11323 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (5852655).

Almost surely, 2^90402328 is an apocalyptic number.

It is an amenable number.

90402328 is an abundant number, since it is smaller than the sum of its proper divisors (96882632).

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

90402328 is a wasteful number, since it uses less digits than its factorization.

90402328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28947 (or 28943 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 90402328 is about 9508.0138830357. The cubic root of 90402328 is about 448.8072578455.

The spelling of 90402328 in words is "ninety million, four hundred two thousand, three hundred twenty-eight".