90280704 has 144 divisors (see below), whose sum is σ = 264902400. Its totient is φ = 27168768.

The previous prime is 90280651. The next prime is 90280717. The reversal of 90280704 is 40708209.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335482 + ... + 335750.

It is an arithmetic number, because the mean of its divisors is an integer number (1839600).

Almost surely, 2^90280704 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 90280704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132451200).

90280704 is an abundant number, since it is smaller than the sum of its proper divisors (174621696).

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

90280704 is a wasteful number, since it uses less digits than its factorization.

90280704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 90280704 is about 9501.6158625783. The cubic root of 90280704 is about 448.6058978707.

The spelling of 90280704 in words is "ninety million, two hundred eighty thousand, seven hundred four".