10509280 has 48 divisors (see below), whose sum is σ = 26142480. Its totient is φ = 3981312.

The previous prime is 10509259. The next prime is 10509283. The reversal of 10509280 is 8290501.

It is a super-2 number, since 2×10509280² = 220889932236800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10509283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 4768.

It is an arithmetic number, because the mean of its divisors is an integer number (544635).

Almost surely, 2^10509280 is an apocalyptic number.

10509280 is a gapful number since it is divisible by the number (10) 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 10509280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13071240).

10509280 is an abundant number, since it is smaller than the sum of its proper divisors (15633200).

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

10509280 is a wasteful number, since it uses less digits than its factorization.

10509280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 10509280 is about 3241.8019680418. The cubic root of 10509280 is about 219.0404490107.

Adding to 10509280 its reverse (8290501), we get a palindrome (18799781).

The spelling of 10509280 in words is "ten million, five hundred nine thousand, two hundred eighty".