10997280 has 144 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 2511360.

The previous prime is 10997279. The next prime is 10997291. The reversal of 10997280 is 8279901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9535 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (298116).

Almost surely, 2^10997280 is an apocalyptic number.

10997280 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 10997280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21464352).

10997280 is an abundant number, since it is smaller than the sum of its proper divisors (31931424).

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

10997280 is a wasteful number, since it uses less digits than its factorization.

10997280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 10997280 is about 3316.2147095748. The cubic root of 10997280 is about 222.3796765584.

The spelling of 10997280 in words is "ten million, nine hundred ninety-seven thousand, two hundred eighty".