9280440 has 128 divisors (see below), whose sum is σ = 33364800. Its totient is φ = 2280960.

The previous prime is 9280429. The next prime is 9280457. The reversal of 9280440 is 440829.

It is a super-2 number, since 2×9280440² = 172253133187200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 13710 + ... + 14370.

Almost surely, 2^9280440 is an apocalyptic number.

9280440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9280440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16682400).

9280440 is an abundant number, since it is smaller than the sum of its proper divisors (24084360).

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

9280440 is a wasteful number, since it uses less digits than its factorization.

9280440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 9280440 is about 3046.3814600276. The cubic root of 9280440 is about 210.1468360809.

The spelling of 9280440 in words is "nine million, two hundred eighty thousand, four hundred forty".