10881380 has 48 divisors (see below), whose sum is σ = 24055920. Its totient is φ = 4128768.

The previous prime is 10881379. The next prime is 10881397. The reversal of 10881380 is 8318801.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 984064 + 9897316 = 992^2 + 3146^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 42212 + ... + 42468.

It is an arithmetic number, because the mean of its divisors is an integer number (501165).

Almost surely, 2^10881380 is an apocalyptic number.

10881380 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 10881380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12027960).

10881380 is an abundant number, since it is smaller than the sum of its proper divisors (13174540).

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

10881380 is a wasteful number, since it uses less digits than its factorization.

10881380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 10881380 is about 3298.6936808379. The cubic root of 10881380 is about 221.5956984138.

The spelling of 10881380 in words is "ten million, eight hundred eighty-one thousand, three hundred eighty".