8990280 has 192 divisors, whose sum is σ = 33611760. Its totient is φ = 2064384.

The previous prime is 8990257. The next prime is 8990321. The reversal of 8990280 is 820998.

It can be written as a sum of positive squares in 8 ways, for example, as 1004004 + 7986276 = 1002^2 + 2826^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79504 + ... + 79616.

Almost surely, 2^8990280 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 8990280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16805880).

8990280 is an abundant number, since it is smaller than the sum of its proper divisors (24621480).

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

8990280 is a wasteful number, since it uses less digits than its factorization.

8990280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 8990280 is about 2998.3795623636. The cubic root of 8990280 is about 207.9334723135.

The spelling of 8990280 in words is "eight million, nine hundred ninety thousand, two hundred eighty".