10891616 has 24 divisors (see below), whose sum is σ = 22024800. Its totient is φ = 5298048.

The previous prime is 10891591. The next prime is 10891649. The reversal of 10891616 is 61619801.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3416 + ... + 5783.

It is an arithmetic number, because the mean of its divisors is an integer number (917700).

Almost surely, 2^10891616 is an apocalyptic number.

10891616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10891616 is an abundant number, since it is smaller than the sum of its proper divisors (11133184).

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

10891616 is an equidigital number, since it uses as much as digits as its factorization.

10891616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246 (or 9238 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 10891616 is about 3300.2448394021. The cubic root of 10891616 is about 221.6651608870.

The spelling of 10891616 in words is "ten million, eight hundred ninety-one thousand, six hundred sixteen".