10889720 has 32 divisors (see below), whose sum is σ = 24909120. Its totient is φ = 4283520.

The previous prime is 10889713. The next prime is 10889737. The reversal of 10889720 is 2798801.

It is a happy number.

10889720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (778410).

Almost surely, 2^10889720 is an apocalyptic number.

10889720 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 10889720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12454560).

10889720 is an abundant number, since it is smaller than the sum of its proper divisors (14019400).

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

10889720 is a wasteful number, since it uses less digits than its factorization.

10889720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535 (or 4531 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 10889720 is about 3299.9575754849. The cubic root of 10889720 is about 221.6522977351.

The spelling of 10889720 in words is "ten million, eight hundred eighty-nine thousand, seven hundred twenty".